support bazel complie this project and format code.
This commit is contained in:
zhangxing
light-city
parent
1f86192576
commit
7529ae3a55
6
.gitignore
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com.sh
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com.sh
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bazel-CPlusPlusThings
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bazel-bin
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bazel-out
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bazel-testlogs
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bazel-cplusplus_bazel
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.vscode
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.vscode/settings.json
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{
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"files.associations": {
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"iostream": "cpp",
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"ostream": "cpp",
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"__availability": "cpp",
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"__config": "cpp",
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"__string": "cpp",
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"deque": "cpp",
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"filesystem": "cpp",
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"functional": "cpp",
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"iterator": "cpp",
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"ratio": "cpp",
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"__bit_reference": "cpp",
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"__bits": "cpp",
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"__debug": "cpp",
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"__errc": "cpp",
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"__functional_base": "cpp",
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"__hash_table": "cpp",
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"__locale": "cpp",
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"__mutex_base": "cpp",
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"__node_handle": "cpp",
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"__nullptr": "cpp",
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"__split_buffer": "cpp",
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"__threading_support": "cpp",
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"__tree": "cpp",
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"__tuple": "cpp",
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"algorithm": "cpp",
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"array": "cpp",
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"atomic": "cpp",
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"bit": "cpp",
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"bitset": "cpp",
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"cctype": "cpp",
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"chrono": "cpp",
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"cinttypes": "cpp",
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"clocale": "cpp",
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"cmath": "cpp",
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"complex": "cpp",
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"condition_variable": "cpp",
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"cstdarg": "cpp",
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"cstddef": "cpp",
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"cstdint": "cpp",
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"cstdio": "cpp",
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"cstdlib": "cpp",
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"cstring": "cpp",
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"ctime": "cpp",
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"cwchar": "cpp",
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"cwctype": "cpp",
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"exception": "cpp",
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"fstream": "cpp",
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"initializer_list": "cpp",
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"iomanip": "cpp",
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"ios": "cpp",
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"iosfwd": "cpp",
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"istream": "cpp",
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"limits": "cpp",
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"list": "cpp",
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"locale": "cpp",
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"map": "cpp",
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"memory": "cpp",
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"mutex": "cpp",
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"new": "cpp",
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"numeric": "cpp",
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"optional": "cpp",
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"queue": "cpp",
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"regex": "cpp",
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"set": "cpp",
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"sstream": "cpp",
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"stack": "cpp",
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"stdexcept": "cpp",
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"streambuf": "cpp",
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"string": "cpp",
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"string_view": "cpp",
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"system_error": "cpp",
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"tuple": "cpp",
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"type_traits": "cpp",
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"typeinfo": "cpp",
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"unordered_map": "cpp",
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"unordered_set": "cpp",
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"utility": "cpp",
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"vector": "cpp",
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"any": "cpp",
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"barrier": "cpp",
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"*.tcc": "cpp",
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"cfenv": "cpp",
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"charconv": "cpp",
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"codecvt": "cpp",
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"compare": "cpp",
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"concepts": "cpp",
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"coroutine": "cpp",
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"csetjmp": "cpp",
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"csignal": "cpp",
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"cuchar": "cpp",
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"forward_list": "cpp",
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"memory_resource": "cpp",
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"random": "cpp",
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"source_location": "cpp",
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"future": "cpp",
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"latch": "cpp",
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"numbers": "cpp",
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"ranges": "cpp",
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"scoped_allocator": "cpp",
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"semaphore": "cpp",
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"shared_mutex": "cpp",
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"span": "cpp",
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"stop_token": "cpp",
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"syncstream": "cpp",
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"thread": "cpp",
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"typeindex": "cpp",
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"valarray": "cpp",
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"variant": "cpp"
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}
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}
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106
README.md
106
README.md
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├── [输入输出重载.cpp](./practical_exercises/key_exercises/输入输出重载.cpp)
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├── [输入输出重载.cpp](./practical_exercises/key_exercises/输入输出重载.cpp)
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├── [输出格式.cpp](./practical_exercises/key_exercises/输出格式.cpp)
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├── [输出格式.cpp](./practical_exercises/key_exercises/输出格式.cpp)
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### 3.[C++2.0 新特性](./c++2.0)
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### 3.[C++2.0 新特性](./cpp2.0)
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#### 3.0 概况
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#### 3.0 概况
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C++2.0 是一个简称，意为「现代 C++」，包括 C++11/14/17/20。
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C++2.0 是一个简称，意为「现代 C++」，包括 C++11/14/17/20。
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#### 3.1 [C++11 新特性](./c++2.0/c++11)
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#### 3.1 [C++11 新特性](./cpp2.0/cpp11)
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- [Variadic Templates](./c++2.0/c++11/variadic)
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- [Variadic Templates](./cpp2.0/cpp11/variadic)
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- Spaces in Template Expressions
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- Spaces in Template Expressions
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@ -172,17 +172,17 @@ C++2.0 是一个简称，意为「现代 C++」，包括 C++11/14/17/20。
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vector<list<int>> // before c++ 11 error error: ‘>>’ should be ‘> >’ within a nested template argument list,c++11后可以正常通过
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vector<list<int>> // before c++ 11 error error: ‘>>’ should be ‘> >’ within a nested template argument list,c++11后可以正常通过
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```
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```
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- [nullptr and nullptr_t](./c++2.0/c++11/nullptr.cpp)
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- [nullptr and nullptr_t](./cpp2.0/cpp11/nullptr.cpp)
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- [Automatic Type Deduction with auto](./c++2.0/c++11/auto.cpp)
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- [Automatic Type Deduction with auto](./cpp2.0/cpp11/auto.cpp)
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- [Uniform Initialization ](./c++2.0/c++11/uniform_initialization.cpp)
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- [Uniform Initialization ](./cpp2.0/cpp11/uniform_initialization.cpp)
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- [initializer_list](./c++2.0/c++11/initializer.cpp)
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- [initializer_list](./cpp2.0/cpp11/initializer.cpp)
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- [explicit for ctors taking more than one argument](./c++2.0/c++11/explicit.cpp)
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- [explicit for ctors taking more than one argument](./cpp2.0/cpp11/explicit.cpp)
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- [range-based for statement](./c++2.0/c++11/auto.cpp)
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- [range-based for statement](./cpp2.0/cpp11/auto.cpp)
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```cpp
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```cpp
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for(decl:col) {
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for(decl:col) {
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@ -190,33 +190,33 @@ C++2.0 是一个简称，意为「现代 C++」，包括 C++11/14/17/20。
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}
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}
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```
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```
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- [=default,=delete](./c++2.0/c++11/default_delete.cpp)
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- [=default,=delete](./cpp2.0/cpp11/default_delete.cpp)
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如果你自行定义了一个 `ctor`, 那么编译器就不会给你一个 `default ctor`
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如果你自行定义了一个 `ctor`, 那么编译器就不会给你一个 `default ctor`
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如果强制加上 `=default`, 就可以重新获得并使用 `default ctor`.
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如果强制加上 `=default`, 就可以重新获得并使用 `default ctor`.
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- Alias(化名) Template (template typedef)
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- Alias(化名) Template (template typedef)
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- [alias.cpp](./c++2.0/c++11/alias.cpp)
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- [alias.cpp](./cpp2.0/cpp11/alias.cpp)
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- [template_template.cpp](./c++2.0/c++11/template_template.cpp)
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- [template_template.cpp](./cpp2.0/cpp11/template_template.cpp)
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- [template template parameter](./c++2.0/template_template.cpp)
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- [template template parameter](./cpp2.0/template_template.cpp)
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- [type alias](./c++2.0/c++11/type_alias.cpp)
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- [type alias](./cpp2.0/cpp11/type_alias.cpp)
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- [noexcept](./c++2.0/c++11/noexcept.cpp)
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- [noexcept](./cpp2.0/cpp11/noexcept.cpp)
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- [override](./c++2.0/c++11/override.cpp)
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- [override](./cpp2.0/cpp11/override.cpp)
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- [final](./c++2.0/c++11/final.cpp)
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- [final](./cpp2.0/cpp11/final.cpp)
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- [decltype](./c++2.0/c++11/decltype.cpp)
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- [decltype](./cpp2.0/cpp11/decltype.cpp)
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- [lambda](./c++2.0/c++11/lambda.cpp)
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- [lambda](./cpp2.0/cpp11/lambda.cpp)
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- [Rvalue reference](./c++2.0/c++11/rvalue.cpp)
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- [Rvalue reference](./cpp2.0/cpp11/rvalue.cpp)
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- [move aware class](./c++2.0/c++11/move.cpp)
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- [move aware class](./cpp2.0/cpp11/move.cpp)
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- 容器-结构与分类
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- 容器-结构与分类
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@ -224,9 +224,9 @@ C++2.0 是一个简称，意为「现代 C++」，包括 C++11/14/17/20。
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- (2) 关联式容器包括：`set/multiset`,`map/multimap`
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- (2) 关联式容器包括：`set/multiset`,`map/multimap`
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- (3) 无序容器(C++2.0 新引入,更换原先 `hash_xxx` 为 `unordered_xxx`)包括：`unordered_map/unordered_multimap,unordered_set/unordered_multiset`
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- (3) 无序容器(C++2.0 新引入,更换原先 `hash_xxx` 为 `unordered_xxx`)包括：`unordered_map/unordered_multimap,unordered_set/unordered_multiset`
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- [Hash Function](./c++2.0/c++11/hash.cpp)
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- [Hash Function](./cpp2.0/cpp11/hash.cpp)
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- [tuple](./c++2.0/c++11/tuple.cpp)
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- [tuple](./cpp2.0/cpp11/tuple.cpp)
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学习资料：https://www.bilibili.com/video/av51863195?from=search&seid=3610634846288253061
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学习资料：https://www.bilibili.com/video/av51863195?from=search&seid=3610634846288253061
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@ -295,31 +295,31 @@ C++2.0 是一个简称，意为「现代 C++」，包括 C++11/14/17/20。
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#### 8.1 [极客时间《现代 C++ 实战 30 讲》](https://time.geekbang.org/channel/home)
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#### 8.1 [极客时间《现代 C++ 实战 30 讲》](https://time.geekbang.org/channel/home)
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- [堆、栈、RAII：C++ 里该如何管理资源？](./learn_class/modern_C++_30/RAII)
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- [堆、栈、RAII：C++ 里该如何管理资源？](./learn_class/modern_cpp_30/RAII)
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- [堆](./learn_class/modern_++_30/RAII/heap.cpp)
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- [堆](./learn_class/modern_++_30/RAII/heap.cpp)
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- [栈](./learn_class/modern_C++_30/RAII/stack.cpp)
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- [栈](./learn_class/modern_cpp_30/RAII/stack.cpp)
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- [RAII](./learn_class/modern_C++_30/RAII/RAII.cpp)
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- [RAII](./learn_class/modern_cpp_30/RAII/RAII.cpp)
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- [自己动手，实现 C++ 的智能指针](./learn_class/modern_C++_30/smart_ptr)
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- [自己动手，实现 C++ 的智能指针](./learn_class/modern_cpp_30/smart_ptr)
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- [auto_ptr、scope_ptr](./learn_class/modern_C++_30/smart_ptr/auto_scope.cpp)
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- [auto_ptr、scope_ptr](./learn_class/modern_cpp_30/smart_ptr/auto_scope.cpp)
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- [unique_ptr](./learn_class/modern_C++_30/smart_ptr/unique_ptr.cpp)
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- [unique_ptr](./learn_class/modern_cpp_30/smart_ptr/unique_ptr.cpp)
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- [shared_ptr](./learn_class/modern_C++_30/smart_ptr/shared_ptr.cpp)
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- [shared_ptr](./learn_class/modern_cpp_30/smart_ptr/shared_ptr.cpp)
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- [右值和移动究竟解决了什么问题？](./learn_class/modern_C++_30/reference)
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- [右值和移动究竟解决了什么问题？](./learn_class/modern_cpp_30/reference)
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||||||
- [左值与右值](./learn_class/modern_C++_30/reference/reference.cpp)
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- [左值与右值](./learn_class/modern_cpp_30/reference/reference.cpp)
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- [延长声明周期](./learn_class/modern_C++_30/reference/lifetime.cpp)
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- [延长声明周期](./learn_class/modern_cpp_30/reference/lifetime.cpp)
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- [引用折叠](./learn_class/modern_C++_30/reference/collapses.cpp)
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- [引用折叠](./learn_class/modern_cpp_30/reference/collapses.cpp)
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- [完美转发](./learn_class/modern_C++_30/reference/forward.cpp)
|
- [完美转发](./learn_class/modern_cpp_30/reference/forward.cpp)
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||||||
- [不要返回本地变量的引用](./learn_class/modern_C++_30/reference/don'treturnReference.cpp)
|
- [不要返回本地变量的引用](./learn_class/modern_cpp_30/reference/don'treturnReference.cpp)
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||||||
- [容器 1](./learn_class/modern_C++_30/container1)
|
- [容器 1](./learn_class/modern_cpp_30/container1)
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- [容器 2](./learn_class/modern_C++_30/container2)
|
- [容器 2](./learn_class/modern_cpp_30/container2)
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||||||
- [异常](./learn_class/modern_C++_30/exception)
|
- [异常](./learn_class/modern_cpp_30/exception)
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||||||
- [字面量、静态断言和成员函数说明符](./learn_class/modern_C++_30/literalAssert)
|
- [字面量、静态断言和成员函数说明符](./learn_class/modern_cpp_30/literalAssert)
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||||||
- [是不是应该返回对象？](./learn_class/modern_C++_30/returnObj)
|
- [是不是应该返回对象？](./learn_class/modern_cpp_30/returnObj)
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||||||
- [编译期多态：泛型编程和模板入门](./learn_class/modern_C++_30/compilerpoly)
|
- [编译期多态：泛型编程和模板入门](./learn_class/modern_cpp_30/compilerpoly)
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||||||
- [译期能做些什么？一个完整的计算世界](./learn_class/modern_C++_30/compilercompute)
|
- [译期能做些什么？一个完整的计算世界](./learn_class/modern_cpp_30/compilercompute)
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||||||
- [SFINAE：不是错误的替换失败是怎么回事?](./learn_class/modern_C++_30/SFINAE)
|
- [SFINAE：不是错误的替换失败是怎么回事?](./learn_class/modern_cpp_30/SFINAE)
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||||||
- [constexpr：一个常态的世界](./learn_class/modern_C++_30/constexpr)
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- [constexpr：一个常态的世界](./learn_class/modern_cpp_30/constexpr)
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||||||
- [函数对象和 lambda：进入函数式编程](./learn_class/modern_C++_30/functionLambda)
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- [函数对象和 lambda：进入函数式编程](./learn_class/modern_cpp_30/functionLambda)
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- [内存模型和 atomic：理解并发的复杂性](./learn_class/modern_C++_30/memorymodel_atomic)
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- [内存模型和 atomic：理解并发的复杂性](./learn_class/modern_cpp_30/memorymodel_atomic)
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### 9.工具篇
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### 9.工具篇
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@ -376,20 +376,20 @@ map<int, int> mp{
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||||||
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||||||
### 12.赞助我
|
### 12.关注我
|
||||||
|
|
||||||
如果觉得不错，赞助我吧~
|
如果觉得不错，关注我吧~
|
||||||
|
|
||||||
<table>
|
<table>
|
||||||
<tbody>
|
<tbody>
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||||||
<tr>
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<tr>
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||||||
<th align="center" style="height=200 width="200">
|
<th align="center" style="height=200 width="200">
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||||||
<img src="https://light-city.club/sc/assets/images/alipay.jpg" height="200" width="200" ><br>
|
<img src="./img/cpp.jpg" height="200" width="200" ><br>
|
||||||
支付宝
|
星球
|
||||||
</th>
|
</th>
|
||||||
<th align="center" style="height=200 width="200">
|
<th align="center" style="height=200 width="200">
|
||||||
<img src="https://light-city.club/sc/assets/images/wechat.png" height="200" width="200" ><br>
|
<img src="./img/wechat.jpg" height="200" width="200" ><br>
|
||||||
微信
|
微信公众号
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||||||
</th>
|
</th>
|
||||||
</tr>
|
</tr>
|
||||||
</tbody>
|
</tbody>
|
||||||
|
|||||||
48
README_EN.md
48
README_EN.md
@ -253,31 +253,31 @@ Learning materials: https://chenxiaowei.gitbook.io/cpp_concurrency_in_action/
|
|||||||
|
|
||||||
#### 6.1 [Chinese Name:极客时间《现代 C++ 实战 30 讲》](https://time.geekbang.org/channel/home)
|
#### 6.1 [Chinese Name:极客时间《现代 C++ 实战 30 讲》](https://time.geekbang.org/channel/home)
|
||||||
|
|
||||||
- [heap、stack、RAII：How to manage resources for C ++ ?](./learn_class/modern_C++_30/RAII)
|
- [heap、stack、RAII：How to manage resources for C ++ ?](./learn_class/modern_cpp_30/RAII)
|
||||||
- [heap](./modern_++_30/RAII/heap.cpp)
|
- [heap](./modern_++_30/RAII/heap.cpp)
|
||||||
- [stack](./learn_class/modern_C++_30/RAII/stack.cpp)
|
- [stack](./learn_class/modern_cpp_30/RAII/stack.cpp)
|
||||||
- [RAII](./learn_class/modern_C++_30/RAII/RAII.cpp)
|
- [RAII](./learn_class/modern_cpp_30/RAII/RAII.cpp)
|
||||||
- [Implementing smart pointers for C ++](./learn_class/modern_C++_30/smart_ptr)
|
- [Implementing smart pointers for C ++](./learn_class/modern_cpp_30/smart_ptr)
|
||||||
- [auto_ptr、scope_ptr](./learn_class/modern_C++_30/smart_ptr/auto_scope.cpp)
|
- [auto_ptr、scope_ptr](./learn_class/modern_cpp_30/smart_ptr/auto_scope.cpp)
|
||||||
- [unique_ptr](./learn_class/modern_C++_30/smart_ptr/unique_ptr.cpp)
|
- [unique_ptr](./learn_class/modern_cpp_30/smart_ptr/unique_ptr.cpp)
|
||||||
- [shared_ptr](./learn_class/modern_C++_30/smart_ptr/shared_ptr.cpp)
|
- [shared_ptr](./learn_class/modern_cpp_30/smart_ptr/shared_ptr.cpp)
|
||||||
- [What exactly does r value and move solve？](./learn_class/modern_C++_30/reference)
|
- [What exactly does r value and move solve？](./learn_class/modern_cpp_30/reference)
|
||||||
- [L value and R value](./learn_class/modern_C++_30/reference/reference.cpp)
|
- [L value and R value](./learn_class/modern_cpp_30/reference/reference.cpp)
|
||||||
- [Extend the declaration cycle](./learn_class/modern_C++_30/reference/lifetime.cpp)
|
- [Extend the declaration cycle](./learn_class/modern_cpp_30/reference/lifetime.cpp)
|
||||||
- [Reference folding](./learn_class/modern_C++_30/reference/collapses.cpp)
|
- [Reference folding](./learn_class/modern_cpp_30/reference/collapses.cpp)
|
||||||
- [Perfect forward](./learn_class/modern_C++_30/reference/forward.cpp)
|
- [Perfect forward](./learn_class/modern_cpp_30/reference/forward.cpp)
|
||||||
- [Do not return Reference](./learn_class/modern_C++_30/reference/don'treturnReference.cpp)
|
- [Do not return Reference](./learn_class/modern_cpp_30/reference/don'treturnReference.cpp)
|
||||||
- [Container 1](./learn_class/modern_C++_30/container1)
|
- [Container 1](./learn_class/modern_cpp_30/container1)
|
||||||
- [Container 2](./learn_class/modern_C++_30/container2)
|
- [Container 2](./learn_class/modern_cpp_30/container2)
|
||||||
- [Exception](./learn_class/modern_C++_30/exception)
|
- [Exception](./learn_class/modern_cpp_30/exception)
|
||||||
- [Literal、Static Assertion And Member Function Specifier](./learn_class/modern_C++_30/literalAssert)
|
- [Literal、Static Assertion And Member Function Specifier](./learn_class/modern_cpp_30/literalAssert)
|
||||||
- [Return Object？](./learn_class/modern_C++_30/returnObj)c
|
- [Return Object？](./learn_class/modern_cpp_30/returnObj)c
|
||||||
- [Getting started with generic programming and templates](./learn_class/modern_C++_30/compilerpoly)
|
- [Getting started with generic programming and templates](./learn_class/modern_cpp_30/compilerpoly)
|
||||||
- [A whole Compiler Compute World](./learn_class/modern_C++_30/compilercompute)
|
- [A whole Compiler Compute World](./learn_class/modern_cpp_30/compilercompute)
|
||||||
- [SFINAE：What is it if it is not replace error?](./learn_class/modern_C++_30/SFINAE)
|
- [SFINAE：What is it if it is not replace error?](./learn_class/modern_cpp_30/SFINAE)
|
||||||
- [constexpr：A Normal World](./learn_class/modern_C++_30/constexpr)
|
- [constexpr：A Normal World](./learn_class/modern_cpp_30/constexpr)
|
||||||
- [Function object and Lambda：functionLambda](./learn_class/modern_C++_30/functionLambda)
|
- [Function object and Lambda：functionLambda](./learn_class/modern_cpp_30/functionLambda)
|
||||||
- [Memory Model and Atomic：Understangding the complexity of concurrency](./learn_class/modern_C++_30/memorymodel_atomic)
|
- [Memory Model and Atomic：Understangding the complexity of concurrency](./learn_class/modern_cpp_30/memorymodel_atomic)
|
||||||
|
|
||||||
### 7.Tools
|
### 7.Tools
|
||||||
|
|
||||||
|
|||||||
43
basic_content/abstract/BUILD
Normal file
43
basic_content/abstract/BUILD
Normal file
@ -0,0 +1,43 @@
|
|||||||
|
# you can run some main program, just replace binary name
|
||||||
|
# such as: `bazel run basic_content/abstract:interesting_facts1`
|
||||||
|
# `bazel run basic_content/abstract:interesting_facts2`
|
||||||
|
# etc...
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "interesting_facts1",
|
||||||
|
srcs = ["interesting_facts1.cpp"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "interesting_facts2",
|
||||||
|
srcs = ["interesting_facts2.cpp"],
|
||||||
|
)
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "interesting_facts3",
|
||||||
|
srcs = ["interesting_facts3.cpp"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "interesting_facts4",
|
||||||
|
srcs = ["interesting_facts4.cpp"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "interesting_facts5",
|
||||||
|
srcs = ["interesting_facts5.cpp"],
|
||||||
|
)
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "pure_virtual",
|
||||||
|
srcs = ["pure_virtual.cpp"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "derived_full",
|
||||||
|
srcs = ["derived_full.cpp"],
|
||||||
|
)
|
||||||
@ -23,7 +23,7 @@ public:
|
|||||||
|
|
||||||
抽象类只能作为基类来派生新类使用，不能创建抽象类的对象,抽象类的指针和引用->由抽象类派生出来的类的对象！
|
抽象类只能作为基类来派生新类使用，不能创建抽象类的对象,抽象类的指针和引用->由抽象类派生出来的类的对象！
|
||||||
|
|
||||||
> 代码样例：[test.cpp](./test.cpp)、[pure_virtual.cpp](./pure_virtual.cpp)
|
> 代码样例：[abstract_base.h](./abstract_base.h)、[pure_virtual.cpp](./pure_virtual.cpp)
|
||||||
|
|
||||||
## 2.实现抽象类
|
## 2.实现抽象类
|
||||||
|
|
||||||
|
|||||||
@ -1,27 +1,28 @@
|
|||||||
/**
|
/**
|
||||||
* @file abstract.cpp
|
* @file abstract.cpp
|
||||||
* @brief 抽象类中：在成员函数内可以调用纯虚函数，在构造函数/析构函数内部不能使用纯虚函数
|
* @brief
|
||||||
|
* 抽象类中：在成员函数内可以调用纯虚函数，在构造函数/析构函数内部不能使用纯虚函数
|
||||||
* 如果一个类从抽象类派生而来，它必须实现了基类中的所有纯虚函数，才能成为非抽象类
|
* 如果一个类从抽象类派生而来，它必须实现了基类中的所有纯虚函数，才能成为非抽象类
|
||||||
* @author 光城
|
* @author 光城
|
||||||
* @version v1
|
* @version v1
|
||||||
* @date 2019-07-20
|
* @date 2019-07-20
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
class A {
|
class A {
|
||||||
public:
|
public:
|
||||||
virtual void f() = 0; // 纯虚函数
|
virtual void f() = 0; // 纯虚函数
|
||||||
void g(){ this->f(); }
|
void g() { this->f(); }
|
||||||
A(){}
|
A() {}
|
||||||
};
|
};
|
||||||
class B:public A{
|
class B : public A {
|
||||||
public:
|
public:
|
||||||
void f(){ cout<<"B:f()"<<endl;}
|
void f() { cout << "B:f()" << endl; }
|
||||||
};
|
};
|
||||||
int main(){
|
int main() {
|
||||||
B b;
|
B b;
|
||||||
b.g();
|
b.g();
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|||||||
21
basic_content/abstract/abstract_base.h
Normal file
21
basic_content/abstract/abstract_base.h
Normal file
@ -0,0 +1,21 @@
|
|||||||
|
/**
|
||||||
|
* @file abstreact_base.cpp
|
||||||
|
* @brief
|
||||||
|
* C++中的纯虚函数(或抽象函数)是我们没有实现的虚函数！我们只需声明它!通过声明中赋值0来声明纯虚函数！
|
||||||
|
* 纯虚函数：没有函数体的虚函数
|
||||||
|
* @author 光城
|
||||||
|
* @version v1
|
||||||
|
* @date 2019-07-20
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief 抽象类
|
||||||
|
*/
|
||||||
|
class AbstractBase {
|
||||||
|
// Data members of class
|
||||||
|
public:
|
||||||
|
// Pure Virtual Function
|
||||||
|
virtual void show() = 0;
|
||||||
|
|
||||||
|
/* Other members */
|
||||||
|
};
|
||||||
@ -6,27 +6,24 @@
|
|||||||
* @date 2019-07-20
|
* @date 2019-07-20
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
class Base
|
class Base {
|
||||||
{
|
int x;
|
||||||
int x;
|
|
||||||
public:
|
public:
|
||||||
virtual void fun() = 0;
|
virtual void fun() = 0;
|
||||||
int getX() { return x; }
|
int getX() { return x; }
|
||||||
};
|
};
|
||||||
|
|
||||||
class Derived: public Base
|
class Derived : public Base {
|
||||||
{
|
public:
|
||||||
int y;
|
void fun() { cout << "fun() called"; } // 实现了fun()函数
|
||||||
public:
|
|
||||||
void fun() { cout << "fun() called"; } // 实现了fun()函数
|
|
||||||
};
|
};
|
||||||
|
|
||||||
int main(void)
|
int main(void) {
|
||||||
{
|
Derived d;
|
||||||
Derived d;
|
d.fun();
|
||||||
d.fun();
|
return 0;
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
@ -6,23 +6,21 @@
|
|||||||
* @date 2019-07-20
|
* @date 2019-07-20
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @brief 抽象类至少包含一个纯虚函数
|
* @brief 抽象类至少包含一个纯虚函数
|
||||||
*/
|
*/
|
||||||
class Test
|
class Test {
|
||||||
{
|
int x;
|
||||||
int x;
|
|
||||||
public:
|
public:
|
||||||
virtual void show() = 0;
|
virtual void show() = 0;
|
||||||
int getX() { return x; }
|
int getX() { return x; }
|
||||||
};
|
};
|
||||||
|
|
||||||
int main(void)
|
int main(void) {
|
||||||
{
|
Test t; // error! 不能创建抽象类的对象
|
||||||
Test t; //error! 不能创建抽象类的对象
|
return 0;
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@ -6,33 +6,28 @@
|
|||||||
* @date 2019-07-20
|
* @date 2019-07-20
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @brief 抽象类至少包含一个纯虚函数
|
* @brief 抽象类至少包含一个纯虚函数
|
||||||
*/
|
*/
|
||||||
class Base
|
class Base {
|
||||||
{
|
int x;
|
||||||
int x;
|
|
||||||
public:
|
|
||||||
virtual void show() = 0;
|
|
||||||
int getX() { return x; }
|
|
||||||
|
|
||||||
};
|
|
||||||
class Derived: public Base
|
|
||||||
{
|
|
||||||
public:
|
public:
|
||||||
void show() { cout << "In Derived \n"; }
|
virtual void show() = 0;
|
||||||
Derived(){}
|
int getX() { return x; }
|
||||||
};
|
};
|
||||||
int main(void)
|
class Derived : public Base {
|
||||||
{
|
public:
|
||||||
//Base b; //error! 不能创建抽象类的对象
|
void show() { cout << "In Derived \n"; }
|
||||||
//Base *b = new Base(); error!
|
Derived() {}
|
||||||
Base *bp = new Derived(); // 抽象类的指针和引用 -> 由抽象类派生出来的类的对象
|
};
|
||||||
bp->show();
|
int main(void) {
|
||||||
return 0;
|
// Base b; //error! 不能创建抽象类的对象
|
||||||
|
// Base *b = new Base(); error!
|
||||||
|
Base *bp = new Derived(); // 抽象类的指针和引用 -> 由抽象类派生出来的类的对象
|
||||||
|
bp->show();
|
||||||
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@ -6,24 +6,23 @@
|
|||||||
* @date 2019-07-20
|
* @date 2019-07-20
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
class Base
|
class Base {
|
||||||
{
|
int x;
|
||||||
int x;
|
|
||||||
public:
|
|
||||||
virtual void show() = 0;
|
|
||||||
int getX() { return x; }
|
|
||||||
};
|
|
||||||
class Derived: public Base
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
// void show() { }
|
|
||||||
};
|
|
||||||
int main(void)
|
|
||||||
{
|
|
||||||
Derived d; //error! 派生类没有实现纯虚函数，那么派生类也会变为抽象类，不能创建抽象类的对象
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
public:
|
||||||
|
virtual void show() = 0;
|
||||||
|
int getX() { return x; }
|
||||||
|
};
|
||||||
|
class Derived : public Base {
|
||||||
|
public:
|
||||||
|
// void show() { }
|
||||||
|
};
|
||||||
|
int main(void) {
|
||||||
|
Derived
|
||||||
|
d; // error!
|
||||||
|
// 派生类没有实现纯虚函数，那么派生类也会变为抽象类，不能创建抽象类的对象
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|||||||
@ -6,30 +6,29 @@
|
|||||||
* @date 2019-07-20
|
* @date 2019-07-20
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
// An abstract class with constructor
|
// An abstract class with constructor
|
||||||
class Base
|
class Base {
|
||||||
{
|
protected:
|
||||||
protected:
|
int x;
|
||||||
int x;
|
|
||||||
public:
|
public:
|
||||||
virtual void fun() = 0;
|
virtual void fun() = 0;
|
||||||
Base(int i) { x = i; }
|
Base(int i) { x = i; }
|
||||||
};
|
};
|
||||||
|
|
||||||
class Derived: public Base
|
class Derived : public Base {
|
||||||
{
|
int y;
|
||||||
int y;
|
|
||||||
public:
|
public:
|
||||||
Derived(int i, int j):Base(i) { y = j; }
|
Derived(int i, int j) : Base(i) { y = j; }
|
||||||
void fun() { cout << "x = " << x << ", y = " << y; }
|
void fun() { cout << "x = " << x << ", y = " << y; }
|
||||||
};
|
};
|
||||||
|
|
||||||
int main(void)
|
int main(void) {
|
||||||
{
|
Derived d(4, 5);
|
||||||
Derived d(4, 5);
|
d.fun();
|
||||||
d.fun();
|
return 0;
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
@ -7,24 +7,23 @@
|
|||||||
* @version v1
|
* @version v1
|
||||||
* @date 2019-07-20
|
* @date 2019-07-20
|
||||||
*/
|
*/
|
||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
class Base {
|
class Base {
|
||||||
public:
|
public:
|
||||||
Base() { cout << "Constructor: Base" << endl; }
|
Base() { cout << "Constructor: Base" << endl; }
|
||||||
virtual ~Base() { cout << "Destructor : Base" << endl; }
|
virtual ~Base() { cout << "Destructor : Base" << endl; }
|
||||||
};
|
};
|
||||||
|
|
||||||
class Derived: public Base {
|
class Derived : public Base {
|
||||||
public:
|
public:
|
||||||
Derived() { cout << "Constructor: Derived" << endl; }
|
Derived() { cout << "Constructor: Derived" << endl; }
|
||||||
~Derived() { cout << "Destructor : Derived" << endl; }
|
~Derived() { cout << "Destructor : Derived" << endl; }
|
||||||
};
|
};
|
||||||
|
|
||||||
int main() {
|
int main() {
|
||||||
Base *Var = new Derived();
|
Base *Var = new Derived();
|
||||||
delete Var;
|
delete Var;
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@ -8,27 +8,25 @@
|
|||||||
* @date 2019-07-20
|
* @date 2019-07-20
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include<iostream>
|
#include <iostream>
|
||||||
|
|
||||||
using namespace std;
|
using namespace std;
|
||||||
class A
|
class A {
|
||||||
{
|
|
||||||
private:
|
private:
|
||||||
int a;
|
int a;
|
||||||
|
|
||||||
public:
|
public:
|
||||||
virtual void show()=0; // 纯虚函数
|
virtual void show() = 0; // 纯虚函数
|
||||||
};
|
};
|
||||||
|
|
||||||
|
int main() {
|
||||||
|
/*
|
||||||
|
* 1. 抽象类只能作为基类来派生新类使用
|
||||||
|
* 2. 抽象类的指针和引用->由抽象类派生出来的类的对象！
|
||||||
|
*/
|
||||||
|
A a; // error 抽象类，不能创建对象
|
||||||
|
|
||||||
int main()
|
A *a1; // ok 可以定义抽象类的指针
|
||||||
{
|
|
||||||
/*
|
|
||||||
* 1. 抽象类只能作为基类来派生新类使用
|
|
||||||
* 2. 抽象类的指针和引用->由抽象类派生出来的类的对象！
|
|
||||||
*/
|
|
||||||
A a; // error 抽象类，不能创建对象
|
|
||||||
|
|
||||||
A *a1; // ok 可以定义抽象类的指针
|
A *a2 = new A(); // error, A是抽象类，不能创建对象
|
||||||
|
|
||||||
A *a2 = new A(); // error, A是抽象类，不能创建对象
|
|
||||||
}
|
}
|
||||||
|
|||||||
@ -1,23 +0,0 @@
|
|||||||
/**
|
|
||||||
* @file test.cpp
|
|
||||||
* @brief C++中的纯虚函数(或抽象函数)是我们没有实现的虚函数！我们只需声明它!通过声明中赋值0来声明纯虚函数！
|
|
||||||
* 纯虚函数：没有函数体的虚函数
|
|
||||||
* @author 光城
|
|
||||||
* @version v1
|
|
||||||
* @date 2019-07-20
|
|
||||||
*/
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
/**
|
|
||||||
* @brief 抽象类
|
|
||||||
*/
|
|
||||||
class Test
|
|
||||||
{
|
|
||||||
// Data members of class
|
|
||||||
public:
|
|
||||||
// Pure Virtual Function
|
|
||||||
virtual void show() = 0;
|
|
||||||
|
|
||||||
/* Other members */
|
|
||||||
};
|
|
||||||
13
basic_content/assert/BUILD
Normal file
13
basic_content/assert/BUILD
Normal file
@ -0,0 +1,13 @@
|
|||||||
|
# you can run some main program, just replace binary name
|
||||||
|
# such as: `bazel run basic_content/assert:ignore_assert`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "ignore_assert",
|
||||||
|
srcs = ["ignore_assert.c"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "assert",
|
||||||
|
srcs = ["assert.c"],
|
||||||
|
)
|
||||||
@ -6,7 +6,8 @@ int main()
|
|||||||
int x = 7;
|
int x = 7;
|
||||||
|
|
||||||
/* Some big code in between and let's say x
|
/* Some big code in between and let's say x
|
||||||
* is accidentally changed to 9 */
|
* is accidentally changed to 9
|
||||||
|
*/
|
||||||
x = 9;
|
x = 9;
|
||||||
|
|
||||||
// Programmer assumes x to be 7 in rest of the code
|
// Programmer assumes x to be 7 in rest of the code
|
||||||
|
|||||||
@ -11,7 +11,6 @@
|
|||||||
#include<assert.h>
|
#include<assert.h>
|
||||||
|
|
||||||
int main(){
|
int main(){
|
||||||
int x=7;
|
|
||||||
assert(x==5);
|
assert(x==5);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|||||||
7
basic_content/bit/BUILD
Normal file
7
basic_content/bit/BUILD
Normal file
@ -0,0 +1,7 @@
|
|||||||
|
# please run `bazel run basic_content/bit:bit`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "bit",
|
||||||
|
srcs = ["bit.cpp"],
|
||||||
|
)
|
||||||
@ -108,7 +108,7 @@ struct stuff
|
|||||||
|
|
||||||
这里 stuff.field1 与 stuff.field2 之间有一个 2 Bits 的空隙，stuff.field3 则存储在下一个 unsigned int 中，该结构现在大小为 3 * 32 = 96 Bits。
|
这里 stuff.field1 与 stuff.field2 之间有一个 2 Bits 的空隙，stuff.field3 则存储在下一个 unsigned int 中，该结构现在大小为 3 * 32 = 96 Bits。
|
||||||
|
|
||||||
学习代码见：[learn.cpp](learn.cpp)
|
学习代码见：[bit.cpp](bit.cpp)
|
||||||
|
|
||||||
## 位域的初始化和位的重映射
|
## 位域的初始化和位的重映射
|
||||||
|
|
||||||
|
|||||||
18
basic_content/bit/bit.cpp
Normal file
18
basic_content/bit/bit.cpp
Normal file
@ -0,0 +1,18 @@
|
|||||||
|
#include <iostream>
|
||||||
|
|
||||||
|
using namespace std;
|
||||||
|
struct stuff {
|
||||||
|
unsigned int field1 : 30;
|
||||||
|
unsigned int : 2;
|
||||||
|
unsigned int field2 : 4;
|
||||||
|
unsigned int : 0;
|
||||||
|
unsigned int field3 : 3;
|
||||||
|
};
|
||||||
|
int main() {
|
||||||
|
struct stuff s = {1, 3, 5};
|
||||||
|
cout << s.field1 << endl;
|
||||||
|
cout << s.field2 << endl;
|
||||||
|
cout << s.field3 << endl;
|
||||||
|
cout << sizeof(s) << endl;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
@ -1,19 +0,0 @@
|
|||||||
#include<iostream>
|
|
||||||
|
|
||||||
using namespace std;
|
|
||||||
struct stuff
|
|
||||||
{
|
|
||||||
unsigned int field1: 30;
|
|
||||||
unsigned int : 2;
|
|
||||||
unsigned int field2: 4;
|
|
||||||
unsigned int : 0;
|
|
||||||
unsigned int field3: 3;
|
|
||||||
};
|
|
||||||
int main(){
|
|
||||||
struct stuff s={1,3,5};
|
|
||||||
cout<<s.field1<<endl;
|
|
||||||
cout<<s.field2<<endl;
|
|
||||||
cout<<s.field3<<endl;
|
|
||||||
cout<<sizeof(s)<<endl;
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
13
basic_content/c_poly/BUILD
Normal file
13
basic_content/c_poly/BUILD
Normal file
@ -0,0 +1,13 @@
|
|||||||
|
# please run `bazel run basic_content/c_poly:c_examp`
|
||||||
|
# please run `bazel run basic_content/c_poly:c++_examp`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "c_examp",
|
||||||
|
srcs = ["c_examp.c"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "c++_examp",
|
||||||
|
srcs = ["c++_examp.cpp"],
|
||||||
|
)
|
||||||
Binary file not shown.
@ -9,34 +9,31 @@
|
|||||||
#include <iostream>
|
#include <iostream>
|
||||||
|
|
||||||
using namespace std;
|
using namespace std;
|
||||||
class A
|
class A {
|
||||||
{
|
public:
|
||||||
public:
|
virtual void f() //虚函数实现
|
||||||
virtual void f()//虚函数实现
|
{
|
||||||
{
|
cout << "Base A::f() " << endl;
|
||||||
cout << "Base A::f() " << endl;
|
}
|
||||||
}
|
|
||||||
};
|
};
|
||||||
|
|
||||||
class B:public A // 必须为共有继承，否则后面调用不到，class默认为私有继承！
|
class B : public A // 必须为共有继承，否则后面调用不到，class默认为私有继承！
|
||||||
{
|
{
|
||||||
public:
|
public:
|
||||||
virtual void f()//虚函数实现,子类中virtual关键字可以没有
|
virtual void f() //虚函数实现,子类中virtual关键字可以没有
|
||||||
{
|
{
|
||||||
cout << "Derived B::f() " << endl;
|
cout << "Derived B::f() " << endl;
|
||||||
}
|
}
|
||||||
};
|
};
|
||||||
|
|
||||||
|
int main() {
|
||||||
|
A a; //基类对象
|
||||||
|
B b; //派生类对象
|
||||||
|
|
||||||
int main()
|
A *pa = &a; //父类指针指向父类对象
|
||||||
{
|
pa->f(); //调用父类的函数
|
||||||
A a;//基类对象
|
|
||||||
B b;//派生类对象
|
|
||||||
|
|
||||||
A* pa = &a;//父类指针指向父类对象
|
pa = &b; //父类指针指向子类对象，多态实现
|
||||||
pa->f();//调用父类的函数
|
pa->f(); //调用派生类同名函数
|
||||||
|
return 0;
|
||||||
pa = &b; //父类指针指向子类对象，多态实现
|
|
||||||
pa->f();//调用派生类同名函数
|
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
Binary file not shown.
17
basic_content/const/BUILD
Normal file
17
basic_content/const/BUILD
Normal file
@ -0,0 +1,17 @@
|
|||||||
|
# please run `bazel run basic_content/const:const_function`
|
||||||
|
# please run `bazel run basic_content/const:const_num`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "const_function",
|
||||||
|
srcs = ["const_function.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "const_num",
|
||||||
|
srcs = ["const_num.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
@ -298,41 +298,42 @@ public:
|
|||||||
int getCount() const;
|
int getCount() const;
|
||||||
|
|
||||||
};
|
};
|
||||||
//main.cpp
|
// apple.cpp
|
||||||
#include<iostream>
|
Apple::Apple(int i) : apple_number(i)
|
||||||
#include"apple.cpp"
|
|
||||||
using namespace std;
|
|
||||||
|
|
||||||
Apple::Apple(int i):apple_number(i)
|
|
||||||
{
|
{
|
||||||
|
|
||||||
}
|
}
|
||||||
int Apple::add(){
|
int Apple::add(int num)
|
||||||
take(1);
|
{
|
||||||
|
take(num);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
int Apple::add(int num) const{
|
int Apple::add(int num) const
|
||||||
|
{
|
||||||
take(num);
|
take(num);
|
||||||
return num;
|
return 0;
|
||||||
}
|
}
|
||||||
void Apple::take(int num) const
|
void Apple::take(int num) const
|
||||||
{
|
{
|
||||||
cout<<"take func "<<num<<endl;
|
std::cout << "take func " << num << std::endl;
|
||||||
}
|
}
|
||||||
int Apple::getCount() const
|
int Apple::getCount() const
|
||||||
{
|
{
|
||||||
take(1);
|
take(1);
|
||||||
add(); // error
|
// add(); //error
|
||||||
return apple_number;
|
return apple_number;
|
||||||
}
|
}
|
||||||
int main(){
|
int main()
|
||||||
|
{
|
||||||
Apple a(2);
|
Apple a(2);
|
||||||
cout<<a.getCount()<<endl;
|
cout << a.getCount() << endl;
|
||||||
a.add(10);
|
a.add(10);
|
||||||
|
const Apple b(3);
|
||||||
|
b.add(100);
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
// main.cpp
|
||||||
```
|
```
|
||||||
> 编译： g++ -o main main.cpp apple.cpp<br>
|
> 编译：bazel run basic_content/const/class_const/first_example:main<br>
|
||||||
|
|
||||||
此时报错，上面getCount()方法中调用了一个add方法，而add方法并非const修饰，所以运行报错。也就是说const成员函数只能访问const成员函数。
|
此时报错，上面getCount()方法中调用了一个add方法，而add方法并非const修饰，所以运行报错。也就是说const成员函数只能访问const成员函数。
|
||||||
|
|
||||||
|
|||||||
16
basic_content/const/class_const/c++11_example/BUILD
Normal file
16
basic_content/const/class_const/c++11_example/BUILD
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
# please run `bazel run basic_content/const/class_const/c++11_example:main`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
|
||||||
|
|
||||||
|
cc_library(
|
||||||
|
name = "apple",
|
||||||
|
srcs = ["apple.cpp"],
|
||||||
|
hdrs = ["apple.h"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "main",
|
||||||
|
srcs = ["main.cpp"],
|
||||||
|
deps = [
|
||||||
|
":apple",
|
||||||
|
],
|
||||||
|
)
|
||||||
@ -1,15 +1,19 @@
|
|||||||
class Apple
|
#include "apple.h"
|
||||||
{
|
#include <iostream>
|
||||||
private:
|
|
||||||
int people[100];
|
|
||||||
public:
|
|
||||||
Apple(int i);
|
|
||||||
//使用c++11标准编译
|
|
||||||
static const int apple_number=10;
|
|
||||||
//const int apple_number=10;
|
|
||||||
void take(int num) const;
|
|
||||||
int add(int num);
|
|
||||||
int add(int num) const;
|
|
||||||
int getCount() const;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
using namespace std;
|
||||||
|
Apple::Apple(int i) {}
|
||||||
|
int Apple::add(int num) {
|
||||||
|
take(num);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
int Apple::add(int num) const {
|
||||||
|
take(num);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
void Apple::take(int num) const { cout << "take func " << num << endl; }
|
||||||
|
int Apple::getCount() const {
|
||||||
|
take(1);
|
||||||
|
// add(); //error
|
||||||
|
return apple_number;
|
||||||
|
}
|
||||||
13
basic_content/const/class_const/c++11_example/apple.h
Normal file
13
basic_content/const/class_const/c++11_example/apple.h
Normal file
@ -0,0 +1,13 @@
|
|||||||
|
#pragma once
|
||||||
|
|
||||||
|
class Apple {
|
||||||
|
public:
|
||||||
|
Apple(int i);
|
||||||
|
// 使用c++11标准编译
|
||||||
|
static const int apple_number = 10;
|
||||||
|
// const int apple_number=10;
|
||||||
|
void take(int num) const;
|
||||||
|
int add(int num);
|
||||||
|
int add(int num) const;
|
||||||
|
int getCount() const;
|
||||||
|
};
|
||||||
Binary file not shown.
@ -1,31 +1,11 @@
|
|||||||
#include<iostream>
|
#include "apple.h"
|
||||||
#include"apple.cpp"
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
Apple::Apple(int i)
|
int main() {
|
||||||
{
|
Apple a(2);
|
||||||
|
cout << a.getCount() << endl;
|
||||||
}
|
a.add(10);
|
||||||
int Apple::add(int num){
|
const Apple b(3);
|
||||||
take(num);
|
b.add(100);
|
||||||
}
|
return 0;
|
||||||
int Apple::add(int num) const{
|
|
||||||
take(num);
|
|
||||||
}
|
|
||||||
void Apple::take(int num) const
|
|
||||||
{
|
|
||||||
cout<<"take func "<<num<<endl;
|
|
||||||
}
|
|
||||||
int Apple::getCount() const
|
|
||||||
{
|
|
||||||
take(1);
|
|
||||||
// add(); //error
|
|
||||||
return apple_number;
|
|
||||||
}
|
|
||||||
int main(){
|
|
||||||
Apple a(2);
|
|
||||||
cout<<a.getCount()<<endl;
|
|
||||||
a.add(10);
|
|
||||||
const Apple b(3);
|
|
||||||
b.add(100);
|
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
16
basic_content/const/class_const/first_example/BUILD
Normal file
16
basic_content/const/class_const/first_example/BUILD
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
# please run `bazel run basic_content/const/class_const/first_example:main`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
|
||||||
|
|
||||||
|
cc_library(
|
||||||
|
name = "apple",
|
||||||
|
srcs = ["apple.cpp"],
|
||||||
|
hdrs = ["apple.h"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "main",
|
||||||
|
srcs = ["main.cpp"],
|
||||||
|
deps = [
|
||||||
|
":apple",
|
||||||
|
],
|
||||||
|
)
|
||||||
@ -1,13 +1,20 @@
|
|||||||
class Apple
|
#include "apple.h"
|
||||||
{
|
#include <iostream>
|
||||||
private:
|
|
||||||
int people[100];
|
|
||||||
public:
|
|
||||||
Apple(int i);
|
|
||||||
const int apple_number;
|
|
||||||
void take(int num) const;
|
|
||||||
int add(int num);
|
|
||||||
int add(int num) const;
|
|
||||||
int getCount() const;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
Apple::Apple(int i) : apple_number(i) {}
|
||||||
|
int Apple::add(int num) {
|
||||||
|
take(num);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
int Apple::add(int num) const {
|
||||||
|
take(num);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
void Apple::take(int num) const {
|
||||||
|
std::cout << "take func " << num << std::endl;
|
||||||
|
}
|
||||||
|
int Apple::getCount() const {
|
||||||
|
take(1);
|
||||||
|
// add(); //error
|
||||||
|
return apple_number;
|
||||||
|
}
|
||||||
11
basic_content/const/class_const/first_example/apple.h
Normal file
11
basic_content/const/class_const/first_example/apple.h
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
#pragma once
|
||||||
|
|
||||||
|
class Apple {
|
||||||
|
public:
|
||||||
|
Apple(int i);
|
||||||
|
const int apple_number;
|
||||||
|
void take(int num) const;
|
||||||
|
int add(int num);
|
||||||
|
int add(int num) const;
|
||||||
|
int getCount() const;
|
||||||
|
};
|
||||||
@ -1,32 +1,12 @@
|
|||||||
#include<iostream>
|
#include "apple.h"
|
||||||
#include"apple.cpp"
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
Apple::Apple(int i):apple_number(i)
|
int main() {
|
||||||
{
|
Apple a(2);
|
||||||
|
cout << a.getCount() << endl;
|
||||||
}
|
a.add(10);
|
||||||
int Apple::add(int num){
|
const Apple b(3);
|
||||||
take(num);
|
b.add(100);
|
||||||
}
|
return 0;
|
||||||
int Apple::add(int num) const{
|
|
||||||
take(num);
|
|
||||||
}
|
|
||||||
void Apple::take(int num) const
|
|
||||||
{
|
|
||||||
cout<<"take func "<<num<<endl;
|
|
||||||
}
|
|
||||||
int Apple::getCount() const
|
|
||||||
{
|
|
||||||
take(1);
|
|
||||||
// add(); //error
|
|
||||||
return apple_number;
|
|
||||||
}
|
|
||||||
int main(){
|
|
||||||
Apple a(2);
|
|
||||||
cout<<a.getCount()<<endl;
|
|
||||||
a.add(10);
|
|
||||||
const Apple b(3);
|
|
||||||
b.add(100);
|
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
18
basic_content/const/class_const/overload_example/BUILD
Normal file
18
basic_content/const/class_const/overload_example/BUILD
Normal file
@ -0,0 +1,18 @@
|
|||||||
|
# please run `bazel run basic_content/const/class_const/overload_example:main`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
|
||||||
|
|
||||||
|
cc_library(
|
||||||
|
name = "apple",
|
||||||
|
srcs = ["apple.cpp"],
|
||||||
|
hdrs = ["apple.h"],
|
||||||
|
)
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "main",
|
||||||
|
srcs = ["main.cpp"],
|
||||||
|
deps = [
|
||||||
|
":apple",
|
||||||
|
],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
@ -1,13 +1,22 @@
|
|||||||
class Apple
|
#include "apple.h"
|
||||||
{
|
#include <iostream>
|
||||||
private:
|
|
||||||
int people[100];
|
|
||||||
public:
|
|
||||||
Apple(int i);
|
|
||||||
static const int apple_number;
|
|
||||||
void take(int num) const;
|
|
||||||
int add();
|
|
||||||
int add(int num) const;
|
|
||||||
int getCount() const;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
int Apple::apple_number = 10;
|
||||||
|
|
||||||
|
Apple::Apple(int i) { apple_number = i; }
|
||||||
|
int Apple::add() {
|
||||||
|
take(1);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
int Apple::add(int num) const {
|
||||||
|
take(num);
|
||||||
|
return num;
|
||||||
|
}
|
||||||
|
void Apple::take(int num) const {
|
||||||
|
std::cout << "take func " << num << std::endl;
|
||||||
|
}
|
||||||
|
int Apple::getCount() const {
|
||||||
|
take(1);
|
||||||
|
add(); // error
|
||||||
|
return apple_number;
|
||||||
|
}
|
||||||
11
basic_content/const/class_const/overload_example/apple.h
Normal file
11
basic_content/const/class_const/overload_example/apple.h
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
#pragma once
|
||||||
|
|
||||||
|
class Apple {
|
||||||
|
public:
|
||||||
|
Apple(int i);
|
||||||
|
static int apple_number;
|
||||||
|
void take(int num) const;
|
||||||
|
int add();
|
||||||
|
int add(int num) const;
|
||||||
|
int getCount() const;
|
||||||
|
};
|
||||||
Binary file not shown.
@ -1,38 +1,12 @@
|
|||||||
#include<iostream>
|
#include "apple.h"
|
||||||
#include"apple.cpp"
|
#include <iostream>
|
||||||
using namespace std;
|
|
||||||
const int Apple::apple_number=10;
|
|
||||||
#include<iostream>
|
|
||||||
#include"apple.cpp"
|
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
Apple::Apple(int i):apple_number(i)
|
int main() {
|
||||||
{
|
Apple a(2);
|
||||||
|
cout << a.getCount() << endl;
|
||||||
}
|
a.add(10);
|
||||||
int Apple::add(){
|
// const Apple b(3);
|
||||||
take(1);
|
// b.add(); // error
|
||||||
return 0;
|
return 0;
|
||||||
}
|
|
||||||
int Apple::add(int num) const{
|
|
||||||
take(num);
|
|
||||||
return num;
|
|
||||||
}
|
|
||||||
void Apple::take(int num) const
|
|
||||||
{
|
|
||||||
cout<<"take func "<<num<<endl;
|
|
||||||
}
|
|
||||||
int Apple::getCount() const
|
|
||||||
{
|
|
||||||
take(1);
|
|
||||||
add(); // error
|
|
||||||
return apple_number;
|
|
||||||
}
|
|
||||||
int main(){
|
|
||||||
Apple a(2);
|
|
||||||
cout<<a.getCount()<<endl;
|
|
||||||
a.add(10);
|
|
||||||
// const Apple b(3);
|
|
||||||
// b.add(); // error
|
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
17
basic_content/const/class_const/static_example/BUILD
Normal file
17
basic_content/const/class_const/static_example/BUILD
Normal file
@ -0,0 +1,17 @@
|
|||||||
|
# please run `bazel run basic_content/const/class_const/static_example:main`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
|
||||||
|
|
||||||
|
cc_library(
|
||||||
|
name = "apple",
|
||||||
|
srcs = ["apple.cpp"],
|
||||||
|
hdrs = ["apple.h"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "main",
|
||||||
|
srcs = ["main.cpp"],
|
||||||
|
deps = [
|
||||||
|
":apple",
|
||||||
|
],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
@ -1,14 +1,22 @@
|
|||||||
class Apple
|
#include "apple.h"
|
||||||
{
|
#include <iostream>
|
||||||
private:
|
|
||||||
int people[100];
|
|
||||||
public:
|
|
||||||
Apple(int i);
|
|
||||||
static int ap; //在类实现文件中定义并初始化
|
|
||||||
static const int apple_number;
|
|
||||||
void take(int num) const;
|
|
||||||
int add(int num);
|
|
||||||
int add(int num) const;
|
|
||||||
int getCount() const;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
const int Apple::apple_number = 10;
|
||||||
|
int Apple::ap = 666;
|
||||||
|
Apple::Apple(int i) {}
|
||||||
|
int Apple::add(int num) {
|
||||||
|
take(num);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
int Apple::add(int num) const {
|
||||||
|
take(num);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
void Apple::take(int num) const {
|
||||||
|
std::cout << "take func " << num << std::endl;
|
||||||
|
}
|
||||||
|
int Apple::getCount() const {
|
||||||
|
take(1);
|
||||||
|
// add(); //error
|
||||||
|
return apple_number;
|
||||||
|
}
|
||||||
11
basic_content/const/class_const/static_example/apple.h
Normal file
11
basic_content/const/class_const/static_example/apple.h
Normal file
@ -0,0 +1,11 @@
|
|||||||
|
#pragma once
|
||||||
|
class Apple {
|
||||||
|
public:
|
||||||
|
Apple(int i);
|
||||||
|
static int ap; // 在类实现文件中定义并初始化
|
||||||
|
static const int apple_number;
|
||||||
|
void take(int num) const;
|
||||||
|
int add(int num);
|
||||||
|
int add(int num) const;
|
||||||
|
int getCount() const;
|
||||||
|
};
|
||||||
Binary file not shown.
@ -1,34 +1,11 @@
|
|||||||
#include<iostream>
|
#include "apple.h"
|
||||||
#include"apple.cpp"
|
#include <iostream>
|
||||||
using namespace std;
|
int main() {
|
||||||
const int Apple::apple_number=10;
|
Apple a(2);
|
||||||
int Apple::ap=666;
|
std::cout << a.getCount() << std::endl;
|
||||||
Apple::Apple(int i)
|
std::cout << a.ap << std::endl;
|
||||||
{
|
a.add(10);
|
||||||
|
const Apple b(3);
|
||||||
}
|
b.add(100);
|
||||||
int Apple::add(int num){
|
return 0;
|
||||||
take(num);
|
|
||||||
}
|
|
||||||
int Apple::add(int num) const{
|
|
||||||
take(num);
|
|
||||||
}
|
|
||||||
void Apple::take(int num) const
|
|
||||||
{
|
|
||||||
cout<<"take func "<<num<<endl;
|
|
||||||
}
|
|
||||||
int Apple::getCount() const
|
|
||||||
{
|
|
||||||
take(1);
|
|
||||||
// add(); //error
|
|
||||||
return apple_number;
|
|
||||||
}
|
|
||||||
int main(){
|
|
||||||
Apple a(2);
|
|
||||||
cout<<a.getCount()<<endl;
|
|
||||||
cout<<a.ap<<endl;
|
|
||||||
a.add(10);
|
|
||||||
const Apple b(3);
|
|
||||||
b.add(100);
|
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
@ -1,11 +1,9 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
void f(const int i){
|
void f(const int i) {
|
||||||
i=10; // error: assignment of read-only parameter ‘i’
|
i = 10; // error: assignment of read-only parameter ‘i’
|
||||||
cout<<i<<endl;
|
cout << i << endl;
|
||||||
}
|
}
|
||||||
|
|
||||||
int main(){
|
int main() { f(1); }
|
||||||
f(1);
|
|
||||||
}
|
|
||||||
|
|||||||
@ -1,8 +1,8 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
int main(){
|
int main() {
|
||||||
const int b = 10;
|
const int b = 10;
|
||||||
b = 0; //error
|
b = 0; // error
|
||||||
const string s = "helloworld";
|
const string s = "helloworld";
|
||||||
const int i,j=0;
|
const int i, j = 0;
|
||||||
}
|
}
|
||||||
|
|||||||
14
basic_content/const/extern_const/BUILD
Normal file
14
basic_content/const/extern_const/BUILD
Normal file
@ -0,0 +1,14 @@
|
|||||||
|
# please run `bazel run basic_content/const/extern_const:const_file1` and `# please run `bazel run basic_content/const/extern_const:file`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "const_file1",
|
||||||
|
srcs = ["const_file1.cpp", "const_file2.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "file",
|
||||||
|
srcs = ["file1.cpp", "file2.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
@ -1 +1 @@
|
|||||||
extern const int ext=12;
|
extern const int ext = 12;
|
||||||
@ -1,11 +1,8 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
/**
|
/**
|
||||||
* by 光城
|
* by 光城
|
||||||
* compile: g++ -o file const_file2.cpp const_file1.cpp
|
* compile: g++ -o file const_file2.cpp const_file1.cpp
|
||||||
* execute: ./file
|
* execute: ./file
|
||||||
*/
|
*/
|
||||||
extern const int ext;
|
extern const int ext;
|
||||||
int main(){
|
int main() { std::cout << ext << std::endl; }
|
||||||
|
|
||||||
std::cout<<ext<<std::endl;
|
|
||||||
}
|
|
||||||
@ -1,11 +1,8 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
/**
|
/**
|
||||||
* by 光城
|
* by 光城
|
||||||
* compile: g++ -o file file2.cpp file1.cpp
|
* compile: g++ -o file file2.cpp file1.cpp
|
||||||
* execute: ./file
|
* execute: ./file
|
||||||
*/
|
*/
|
||||||
extern int ext;
|
extern int ext;
|
||||||
int main(){
|
int main() { std::cout << (ext + 10) << std::endl; }
|
||||||
|
|
||||||
std::cout<<(ext+10)<<std::endl;
|
|
||||||
}
|
|
||||||
24
basic_content/const/funciton_const/condition1/BUILD
Normal file
24
basic_content/const/funciton_const/condition1/BUILD
Normal file
@ -0,0 +1,24 @@
|
|||||||
|
# please run `bazel run basic_content/const/funciton_const/condition2:condition1`
|
||||||
|
# please run `bazel run basic_content/const/funciton_const/condition2:condition2`
|
||||||
|
# please run `bazel run basic_content/const/funciton_const/condition2:condition3`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "condition1",
|
||||||
|
srcs = ["condition1.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "condition2",
|
||||||
|
srcs = ["condition2.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "condition3",
|
||||||
|
srcs = ["condition3.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
@ -1,8 +1,7 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
|
int main() {
|
||||||
int main(){
|
const int *ptr;
|
||||||
const int *ptr;
|
*ptr = 10; // error
|
||||||
*ptr=10; //error
|
|
||||||
}
|
}
|
||||||
|
|||||||
@ -1,9 +1,8 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
|
int main() {
|
||||||
int main(){
|
const int p = 10;
|
||||||
const int p = 10;
|
const void *vp = &p;
|
||||||
const void *vp = &p;
|
void *vp = &p; // error
|
||||||
void *vp = &p; //error
|
|
||||||
}
|
}
|
||||||
|
|||||||
@ -1,12 +1,11 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
int main(){
|
int main() {
|
||||||
const int *ptr;
|
const int *ptr;
|
||||||
int val = 3;
|
int val = 3;
|
||||||
ptr = &val; //ok
|
ptr = &val; // ok
|
||||||
int *ptr1 = &val;
|
int *ptr1 = &val;
|
||||||
*ptr1=4;
|
*ptr1 = 4;
|
||||||
cout<<*ptr<<endl;
|
cout << *ptr << endl;
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|||||||
23
basic_content/const/funciton_const/condition2/BUILD
Normal file
23
basic_content/const/funciton_const/condition2/BUILD
Normal file
@ -0,0 +1,23 @@
|
|||||||
|
# please run `bazel run basic_content/const/funciton_const/condition2:condition1`
|
||||||
|
# please run `bazel run basic_content/const/funciton_const/condition2:condition2`
|
||||||
|
# please run `bazel run basic_content/const/funciton_const/condition2:condition3`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "condition1",
|
||||||
|
srcs = ["condition1.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "condition2",
|
||||||
|
srcs = ["condition2.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "condition3",
|
||||||
|
srcs = ["condition3.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
Binary file not shown.
@ -1,10 +1,9 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
int main(){
|
int main() {
|
||||||
|
int num = 0;
|
||||||
int num=0;
|
int *const ptr = # // const指针必须初始化！且const指针的值不能修改
|
||||||
int * const ptr=# //const指针必须初始化！且const指针的值不能修改
|
int *t = #
|
||||||
int * t = #
|
*t = 1;
|
||||||
*t = 1;
|
cout << *ptr << endl;
|
||||||
cout<<*ptr<<endl;
|
|
||||||
}
|
}
|
||||||
|
|||||||
@ -1,8 +1,7 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
int main(){
|
int main() {
|
||||||
|
const int num = 0;
|
||||||
const int num=0;
|
int *const ptr = # // error! const int* -> int*
|
||||||
int * const ptr=# //error! const int* -> int*
|
cout << *ptr << endl;
|
||||||
cout<<*ptr<<endl;
|
|
||||||
}
|
}
|
||||||
|
|||||||
Binary file not shown.
@ -1,8 +1,7 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
int main(){
|
int main() {
|
||||||
|
const int num = 10;
|
||||||
const int num=10;
|
const int *const ptr = # // error! const int* -> int*
|
||||||
const int * const ptr=# //error! const int* -> int*
|
cout << *ptr << endl;
|
||||||
cout<<*ptr<<endl;
|
|
||||||
}
|
}
|
||||||
|
|||||||
9
basic_content/const/funciton_const/condition3/BUILD
Normal file
9
basic_content/const/funciton_const/condition3/BUILD
Normal file
@ -0,0 +1,9 @@
|
|||||||
|
# please run `bazel run basic_content/const/funciton_const/condition3:condition1`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "condition1",
|
||||||
|
srcs = ["condition1.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
Binary file not shown.
@ -1,10 +1,8 @@
|
|||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
int main(){
|
int main() {
|
||||||
|
const int p = 3;
|
||||||
const int p = 3;
|
const int *const ptr = &p;
|
||||||
const int * const ptr = &p;
|
cout << *ptr << endl;
|
||||||
cout<<*ptr<<endl;
|
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|||||||
8
basic_content/decltype/BUILD
Normal file
8
basic_content/decltype/BUILD
Normal file
@ -0,0 +1,8 @@
|
|||||||
|
# please run `bazel run basic_content/decltype:decltype`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "decltype",
|
||||||
|
srcs = ["decltype.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
Binary file not shown.
@ -1,11 +1,3 @@
|
|||||||
/**
|
|
||||||
* @file decltype.cpp
|
|
||||||
* @brief g++ -o decltype decltype.cpp -std=c++11
|
|
||||||
* @author 光城
|
|
||||||
* @version v1
|
|
||||||
* @date 2019-08-08
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <iostream>
|
#include <iostream>
|
||||||
#include <vector>
|
#include <vector>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
@ -14,47 +6,42 @@ using namespace std;
|
|||||||
*/
|
*/
|
||||||
template <typename T>
|
template <typename T>
|
||||||
|
|
||||||
auto multiply(T x, T y)->decltype(x*y)
|
auto multiply(T x, T y) -> decltype(x * y) {
|
||||||
{
|
return x * y;
|
||||||
return x*y;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
int main()
|
int main() {
|
||||||
{
|
int nums[] = {1, 2, 3, 4};
|
||||||
int nums[] = {1,2,3,4};
|
vector<int> vec(nums, nums + 4);
|
||||||
vector<int> vec(nums,nums+4);
|
vector<int>::iterator it;
|
||||||
vector<int>::iterator it;
|
|
||||||
|
|
||||||
for(it=vec.begin();it!=vec.end();it++)
|
for (it = vec.begin(); it != vec.end(); it++)
|
||||||
cout<<*it<<" ";
|
cout << *it << " ";
|
||||||
cout<<endl;
|
cout << endl;
|
||||||
|
|
||||||
|
using nullptr_t = decltype(nullptr);
|
||||||
|
nullptr_t nu;
|
||||||
|
int *p = NULL;
|
||||||
|
if (p == nu)
|
||||||
|
cout << "NULL" << endl;
|
||||||
|
|
||||||
using nullptr_t = decltype(nullptr);
|
typedef decltype(vec.begin()) vectype;
|
||||||
nullptr_t nu;
|
|
||||||
int * p =NULL;
|
|
||||||
if(p==nu)
|
|
||||||
cout<<"NULL"<<endl;
|
|
||||||
|
|
||||||
|
for (vectype i = vec.begin(); i != vec.end(); i++)
|
||||||
|
cout << *i << " ";
|
||||||
|
cout << endl;
|
||||||
|
|
||||||
typedef decltype(vec.begin()) vectype;
|
/**
|
||||||
|
* 匿名结构体
|
||||||
|
*/
|
||||||
|
struct {
|
||||||
|
int d;
|
||||||
|
double b;
|
||||||
|
} anon_s;
|
||||||
|
|
||||||
for(vectype i=vec.begin();i!=vec.end();i++)
|
decltype(anon_s) as{1, 2.0}; // 定义了一个上面匿名的结构体
|
||||||
cout<<*i<<" ";
|
|
||||||
cout<<endl;
|
|
||||||
|
|
||||||
/**
|
cout << multiply(11, 2) << ":" << as.b << endl;
|
||||||
* 匿名结构体
|
|
||||||
*/
|
|
||||||
struct
|
|
||||||
{
|
|
||||||
int d ;
|
|
||||||
double b;
|
|
||||||
}anon_s;
|
|
||||||
|
|
||||||
decltype(anon_s) as; // 定义了一个上面匿名的结构体
|
return 0;
|
||||||
|
|
||||||
cout<<multiply(11,2)<<endl;
|
|
||||||
|
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
16
basic_content/enum/BUILD
Normal file
16
basic_content/enum/BUILD
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
# please run `bazel run basic_content/enum:classic_practice`
|
||||||
|
# please run `bazel run basic_content/enum:tradition_color`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "classic_practice",
|
||||||
|
srcs = ["classic_practice.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "tradition_color",
|
||||||
|
srcs = ["tradition_color.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
@ -15,14 +15,22 @@
|
|||||||
- 作用域不受限,会容易引起命名冲突。例如下面无法编译通过的：
|
- 作用域不受限,会容易引起命名冲突。例如下面无法编译通过的：
|
||||||
|
|
||||||
```c++
|
```c++
|
||||||
#include <iostream>
|
enum Color
|
||||||
using namespace std;
|
{
|
||||||
|
RED,
|
||||||
enum Color {RED,BLUE};
|
BLUE
|
||||||
enum Feeling {EXCITED,BLUE};
|
};
|
||||||
|
enum Feeling
|
||||||
|
{
|
||||||
|
EXCITED,
|
||||||
|
BLUE
|
||||||
|
};
|
||||||
|
|
||||||
int main()
|
int main()
|
||||||
{
|
{
|
||||||
|
Color a = BLUE; // error
|
||||||
|
Feeling b = EXCITED;
|
||||||
|
std::cout << a << ":" << b << std::endl;
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
```
|
```
|
||||||
|
|||||||
Binary file not shown.
@ -1,24 +1,10 @@
|
|||||||
/**
|
|
||||||
* @file classic_practice.cpp
|
|
||||||
* @brief g++ -o classic_practice classic_practice.cpp -std=c++11
|
|
||||||
* @author 光城
|
|
||||||
* @version v1
|
|
||||||
* @date 2019-08-07
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
/**
|
/**
|
||||||
* @brief namespace解决作用域不受限
|
* @brief namespace解决作用域不受限
|
||||||
*/
|
*/
|
||||||
namespace Color
|
namespace Color {
|
||||||
{
|
enum Type { RED = 15, YELLOW, BLUE };
|
||||||
enum Type
|
|
||||||
{
|
|
||||||
RED=15,
|
|
||||||
YELLOW,
|
|
||||||
BLUE
|
|
||||||
};
|
|
||||||
};
|
};
|
||||||
|
|
||||||
/**
|
/**
|
||||||
@ -32,56 +18,40 @@ namespace Color
|
|||||||
* 这里用结构体而非类，一是因为本身希望这些常量可以公开访问，
|
* 这里用结构体而非类，一是因为本身希望这些常量可以公开访问，
|
||||||
* 二是因为它只包含数据没有成员函数。
|
* 二是因为它只包含数据没有成员函数。
|
||||||
*/
|
*/
|
||||||
struct Color1
|
struct Color1 {
|
||||||
{
|
enum Type { RED = 102, YELLOW, BLUE };
|
||||||
enum Type
|
|
||||||
{
|
|
||||||
RED=102,
|
|
||||||
YELLOW,
|
|
||||||
BLUE
|
|
||||||
};
|
|
||||||
};
|
};
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @brief C++11的枚举类
|
* @brief C++11的枚举类
|
||||||
* 下面等价于enum class Color2:int
|
* 下面等价于enum class Color2:int
|
||||||
*/
|
*/
|
||||||
enum class Color2
|
enum class Color2 { RED = 2, YELLOW, BLUE };
|
||||||
{
|
|
||||||
RED=2,
|
|
||||||
YELLOW,
|
|
||||||
BLUE
|
|
||||||
};
|
|
||||||
|
|
||||||
enum class Color3:char; // 前向声明
|
enum class Color3 : char; // 前向声明
|
||||||
|
|
||||||
// 定义
|
// 定义
|
||||||
enum class Color3:char
|
enum class Color3 : char { RED = 'r', BLUE };
|
||||||
{
|
|
||||||
RED='r',
|
|
||||||
BLUE
|
|
||||||
};
|
|
||||||
|
|
||||||
int main()
|
int main() {
|
||||||
{
|
// 定义新的枚举变量
|
||||||
// 定义新的枚举变量
|
Color::Type c = Color::RED;
|
||||||
Color::Type c = Color::RED;
|
cout << c << endl;
|
||||||
cout<<c<<endl;
|
/**
|
||||||
/**
|
* 上述的另一种方法：
|
||||||
* 上述的另一种方法：
|
* using namespace Color; // 定义新的枚举变量
|
||||||
* using namespace Color; // 定义新的枚举变量
|
* Type c = RED;
|
||||||
* Type c = RED;
|
*/
|
||||||
*/
|
Color1 c1;
|
||||||
Color1 c1;
|
cout << c1.RED << endl;
|
||||||
cout<<c1.RED<<endl;
|
|
||||||
|
|
||||||
Color1::Type c11 = Color1::BLUE;
|
Color1::Type c11 = Color1::BLUE;
|
||||||
cout<<c11<<endl;
|
cout << c11 << endl;
|
||||||
|
|
||||||
Color2 c2 = Color2::RED;
|
Color2 c2 = Color2::RED;
|
||||||
cout << static_cast<int>(c2) << endl;
|
cout << static_cast<int>(c2) << endl;
|
||||||
|
|
||||||
char c3 = static_cast<char>(Color3::RED);
|
char c3 = static_cast<char>(Color3::RED);
|
||||||
cout<<c3<<endl;
|
cout << c3 << endl;
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|||||||
@ -1,10 +1,12 @@
|
|||||||
#include <iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
enum Color {RED,BLUE};
|
enum Color { RED, BLUE };
|
||||||
enum Feeling {EXCITED,BLUE};
|
enum Feeling { EXCITED, BLUE };
|
||||||
|
|
||||||
int main()
|
int main() {
|
||||||
{
|
Color a = BLUE; // error
|
||||||
return 0;
|
Feeling b = EXCITED;
|
||||||
|
std::cout << a << ":" << b << std::endl;
|
||||||
|
return 0;
|
||||||
}
|
}
|
||||||
|
|||||||
9
basic_content/explicit/BUILD
Normal file
9
basic_content/explicit/BUILD
Normal file
@ -0,0 +1,9 @@
|
|||||||
|
# please run `bazel run basic_content/explicit:explicit`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
# Don't panic if you get compilation errors, this is what this code demonstrates, as expected.
|
||||||
|
cc_binary(
|
||||||
|
name = "explicit",
|
||||||
|
srcs = ["explicit.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
Binary file not shown.
@ -2,45 +2,50 @@
|
|||||||
|
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
struct A
|
struct A {
|
||||||
{
|
A(int) {}
|
||||||
A(int) { }
|
operator bool() const { return true; }
|
||||||
operator bool() const { return true; }
|
|
||||||
};
|
};
|
||||||
|
|
||||||
struct B
|
struct B {
|
||||||
{
|
explicit B(int) {}
|
||||||
explicit B(int) {}
|
explicit operator bool() const { return true; }
|
||||||
explicit operator bool() const { return true; }
|
|
||||||
};
|
};
|
||||||
|
|
||||||
void doA(A a) {}
|
void doA(A a) {}
|
||||||
|
|
||||||
void doB(B b) {}
|
void doB(B b) {}
|
||||||
|
|
||||||
int main()
|
int main() {
|
||||||
{
|
A a1(1); // OK：直接初始化
|
||||||
A a1(1); // OK：直接初始化
|
A a2 = 1; // OK：复制初始化
|
||||||
A a2 = 1; // OK：复制初始化
|
A a3{1}; // OK：直接列表初始化
|
||||||
A a3{ 1 }; // OK：直接列表初始化
|
A a4 = {1}; // OK：复制列表初始化
|
||||||
A a4 = { 1 }; // OK：复制列表初始化
|
A a5 = (A)1; // OK：允许 static_cast 的显式转换
|
||||||
A a5 = (A)1; // OK：允许 static_cast 的显式转换
|
doA(1); // OK：允许从 int 到 A 的隐式转换
|
||||||
doA(1); // OK：允许从 int 到 A 的隐式转换
|
if (a1)
|
||||||
if (a1); // OK：使用转换函数 A::operator bool() 的从 A 到 bool 的隐式转换
|
; // OK：使用转换函数 A::operator bool() 的从 A 到 bool 的隐式转换
|
||||||
bool a6(a1); // OK：使用转换函数 A::operator bool() 的从 A 到 bool 的隐式转换
|
bool a6(a1); // OK：使用转换函数 A::operator bool() 的从 A 到 bool 的隐式转换
|
||||||
bool a7 = a1; // OK：使用转换函数 A::operator bool() 的从 A 到 bool 的隐式转换
|
bool a7 = a1; // OK：使用转换函数 A::operator bool() 的从 A 到 bool 的隐式转换
|
||||||
bool a8 = static_cast<bool>(a1); // OK ：static_cast 进行直接初始化
|
bool a8 = static_cast<bool>(a1); // OK ：static_cast 进行直接初始化
|
||||||
|
|
||||||
B b1(1); // OK：直接初始化
|
B b1(1); // OK：直接初始化
|
||||||
// B b2 = 1; // 错误：被 explicit 修饰构造函数的对象不可以复制初始化
|
// B b2 = 1; // 错误：被 explicit
|
||||||
B b3{ 1 }; // OK：直接列表初始化
|
// 修饰构造函数的对象不可以复制初始化
|
||||||
// B b4 = { 1 }; // 错误：被 explicit 修饰构造函数的对象不可以复制列表初始化
|
B b3{1}; // OK：直接列表初始化
|
||||||
B b5 = (B)1; // OK：允许 static_cast 的显式转换
|
// B b4 = { 1 }; // 错误：被 explicit
|
||||||
// doB(1); // 错误：被 explicit 修饰构造函数的对象不可以从 int 到 B 的隐式转换
|
// 修饰构造函数的对象不可以复制列表初始化
|
||||||
if (b1); // OK：被 explicit 修饰转换函数 B::operator bool() 的对象可以从 B 到 bool 的按语境转换
|
B b5 = (B)1; // OK：允许 static_cast 的显式转换
|
||||||
bool b6(b1); // OK：被 explicit 修饰转换函数 B::operator bool() 的对象可以从 B 到 bool 的按语境转换
|
// doB(1); // 错误：被 explicit
|
||||||
// bool b7 = b1; // 错误：被 explicit 修饰转换函数 B::operator bool() 的对象不可以隐式转换
|
// 修饰构造函数的对象不可以从 int 到 B 的隐式转换
|
||||||
bool b8 = static_cast<bool>(b1); // OK：static_cast 进行直接初始化
|
if (b1)
|
||||||
|
; // OK：被 explicit 修饰转换函数 B::operator bool() 的对象可以从 B 到 bool
|
||||||
|
// 的按语境转换
|
||||||
|
bool b6(b1); // OK：被 explicit 修饰转换函数 B::operator bool() 的对象可以从 B
|
||||||
|
// 到 bool 的按语境转换
|
||||||
|
// bool b7 = b1; // 错误：被 explicit 修饰转换函数
|
||||||
|
// B::operator bool() 的对象不可以隐式转换
|
||||||
|
bool b8 = static_cast<bool>(b1); // OK：static_cast 进行直接初始化
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|||||||
4
basic_content/extern/README.md
vendored
4
basic_content/extern/README.md
vendored
@ -82,7 +82,7 @@ extern "C" {
|
|||||||
#include "add.h"
|
#include "add.h"
|
||||||
}
|
}
|
||||||
int main() {
|
int main() {
|
||||||
add(2,3);
|
std::cout << add(2, 3) << std::endl;
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
```
|
```
|
||||||
@ -99,6 +99,8 @@ gcc -c add.c
|
|||||||
g++ add.cpp add.o -o main
|
g++ add.cpp add.o -o main
|
||||||
```
|
```
|
||||||
|
|
||||||
|
如果使用bazel编译，运行:`bazel run basic_content/extern/extern_c++:main`
|
||||||
|
|
||||||
而通常为了C代码能够通用，即既能被C调用，又能被C++调用，头文件通常会有如下写法：
|
而通常为了C代码能够通用，即既能被C调用，又能被C++调用，头文件通常会有如下写法：
|
||||||
|
|
||||||
```c
|
```c
|
||||||
|
|||||||
15
basic_content/extern/extern_c++/BUILD
vendored
Normal file
15
basic_content/extern/extern_c++/BUILD
vendored
Normal file
@ -0,0 +1,15 @@
|
|||||||
|
# please run `bazel run basic_content/extern/extern_c++:main`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
|
||||||
|
|
||||||
|
cc_library(
|
||||||
|
name = "add",
|
||||||
|
srcs = ["add.c"],
|
||||||
|
hdrs = ["add.h"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "main",
|
||||||
|
srcs = ["add.cpp"],
|
||||||
|
deps = [":add"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
6
basic_content/extern/extern_c++/add.cpp
vendored
6
basic_content/extern/extern_c++/add.cpp
vendored
@ -1,9 +1,9 @@
|
|||||||
#include <iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
extern "C" {
|
extern "C" {
|
||||||
#include "add.h"
|
#include "add.h"
|
||||||
}
|
}
|
||||||
int main() {
|
int main() {
|
||||||
add(2,3);
|
std::cout << add(2, 3) << std::endl;
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|||||||
2
basic_content/extern/extern_c++/add.h
vendored
2
basic_content/extern/extern_c++/add.h
vendored
@ -1,4 +1,4 @@
|
|||||||
#ifndef ADD_H
|
#ifndef ADD_H
|
||||||
#define ADD_H
|
#define ADD_H
|
||||||
extern int add(int x,int y);
|
extern int add(int x, int y);
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
BIN
basic_content/extern/extern_c++/add.o
vendored
BIN
basic_content/extern/extern_c++/add.o
vendored
Binary file not shown.
BIN
basic_content/extern/extern_c++/main
vendored
BIN
basic_content/extern/extern_c++/main
vendored
Binary file not shown.
14
basic_content/extern/extern_c/BUILD
vendored
Normal file
14
basic_content/extern/extern_c/BUILD
vendored
Normal file
@ -0,0 +1,14 @@
|
|||||||
|
# please run `bazel run basic_content/extern/extern_c:main`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
|
||||||
|
|
||||||
|
cc_library(
|
||||||
|
name = "add",
|
||||||
|
srcs = ["add.cpp"],
|
||||||
|
hdrs = ["add.h"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "main",
|
||||||
|
srcs = ["add.c"],
|
||||||
|
deps = [":add"],
|
||||||
|
)
|
||||||
4
basic_content/extern/extern_c/add.cpp
vendored
4
basic_content/extern/extern_c/add.cpp
vendored
@ -1,5 +1,3 @@
|
|||||||
#include "add.h"
|
#include "add.h"
|
||||||
|
|
||||||
int add(int x,int y) {
|
int add(int x, int y) { return x + y; }
|
||||||
return x+y;
|
|
||||||
}
|
|
||||||
|
|||||||
2
basic_content/extern/extern_c/add.h
vendored
2
basic_content/extern/extern_c/add.h
vendored
@ -1,6 +1,6 @@
|
|||||||
#ifndef ADD_H
|
#ifndef ADD_H
|
||||||
#define ADD_H
|
#define ADD_H
|
||||||
extern "C" {
|
extern "C" {
|
||||||
int add(int x,int y);
|
int add(int x, int y);
|
||||||
}
|
}
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
BIN
basic_content/extern/extern_c/add.o
vendored
BIN
basic_content/extern/extern_c/add.o
vendored
Binary file not shown.
BIN
basic_content/extern/extern_c/main
vendored
BIN
basic_content/extern/extern_c/main
vendored
Binary file not shown.
15
basic_content/friend/BUILD
Normal file
15
basic_content/friend/BUILD
Normal file
@ -0,0 +1,15 @@
|
|||||||
|
# please run `bazel run basic_content/friend:friend_class`
|
||||||
|
# please run `bazel run basic_content/friend:friend_func`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "friend_class",
|
||||||
|
srcs = ["friend_class.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "friend_func",
|
||||||
|
srcs = ["friend_func.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
Binary file not shown.
@ -2,27 +2,23 @@
|
|||||||
|
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
class A
|
class A {
|
||||||
{
|
|
||||||
public:
|
public:
|
||||||
A(int _a):a(_a){};
|
A(int _a) : a(_a){};
|
||||||
friend class B;
|
friend class B;
|
||||||
|
|
||||||
private:
|
private:
|
||||||
int a;
|
int a;
|
||||||
};
|
};
|
||||||
|
|
||||||
class B
|
class B {
|
||||||
{
|
|
||||||
public:
|
public:
|
||||||
int getb(A ca) {
|
int getb(A ca) { return ca.a; };
|
||||||
return ca.a;
|
|
||||||
};
|
|
||||||
};
|
};
|
||||||
|
|
||||||
int main()
|
int main() {
|
||||||
{
|
A a(3);
|
||||||
A a(3);
|
B b;
|
||||||
B b;
|
cout << b.getb(a) << endl;
|
||||||
cout<<b.getb(a)<<endl;
|
return 0;
|
||||||
return 0;
|
|
||||||
}
|
}
|
||||||
|
|||||||
Binary file not shown.
@ -1,33 +1,20 @@
|
|||||||
/**
|
|
||||||
* @file friend_func.cpp
|
|
||||||
* @brief 友元函数
|
|
||||||
* @author 光城
|
|
||||||
* @version v1
|
|
||||||
* @date 2019-08-06
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <iostream>
|
#include <iostream>
|
||||||
|
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
class A
|
class A {
|
||||||
{
|
|
||||||
public:
|
public:
|
||||||
A(int _a):a(_a){};
|
A(int _a) : a(_a){};
|
||||||
friend int geta(A &ca); ///< 友元函数
|
friend int geta(A &ca); ///< 友元函数
|
||||||
private:
|
private:
|
||||||
int a;
|
int a;
|
||||||
};
|
};
|
||||||
|
|
||||||
int geta(A &ca)
|
int geta(A &ca) { return ca.a; }
|
||||||
{
|
|
||||||
return ca.a;
|
|
||||||
}
|
|
||||||
|
|
||||||
int main()
|
int main() {
|
||||||
{
|
A a(3);
|
||||||
A a(3);
|
cout << geta(a) << endl;
|
||||||
cout<<geta(a)<<endl;
|
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|||||||
8
basic_content/func_pointer/BUILD
Normal file
8
basic_content/func_pointer/BUILD
Normal file
@ -0,0 +1,8 @@
|
|||||||
|
# please run `bazel run basic_content/func_pointer:func_pointer`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary")
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "func_pointer",
|
||||||
|
srcs = ["func_pointer.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
Binary file not shown.
@ -6,11 +6,12 @@
|
|||||||
* @date 2019-07-20
|
* @date 2019-07-20
|
||||||
*/
|
*/
|
||||||
|
|
||||||
#include<iostream>
|
#include <iostream>
|
||||||
using namespace std;
|
using namespace std;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @brief 定义了一个变量pFun，这个变量是个指针，指向返回值为空和参数为int的函数的指针！
|
* @brief
|
||||||
|
* 定义了一个变量pFun，这个变量是个指针，指向返回值为空和参数为int的函数的指针！
|
||||||
*/
|
*/
|
||||||
void (*pFun)(int);
|
void (*pFun)(int);
|
||||||
|
|
||||||
@ -19,15 +20,12 @@ void (*pFun)(int);
|
|||||||
*/
|
*/
|
||||||
typedef void (*func)(void);
|
typedef void (*func)(void);
|
||||||
|
|
||||||
void myfunc(void)
|
void myfunc(void) { cout << "asda" << endl; }
|
||||||
{
|
|
||||||
cout<<"asda"<<endl;
|
|
||||||
}
|
|
||||||
|
|
||||||
void glFun(int a){ cout<<a<<endl;}
|
void glFun(int a) { cout << a << endl; }
|
||||||
int main(){
|
int main() {
|
||||||
func pfun = myfunc;/*赋值*/
|
func pfun = myfunc; /*赋值*/
|
||||||
pfun();/*调用*/
|
pfun(); /*调用*/
|
||||||
pFun = glFun;
|
pFun = glFun;
|
||||||
(*pFun)(2);
|
(*pFun)(2);
|
||||||
}
|
}
|
||||||
|
|||||||
23
basic_content/inline/BUILD
Normal file
23
basic_content/inline/BUILD
Normal file
@ -0,0 +1,23 @@
|
|||||||
|
# please run `bazel run basic_content/inline:inline_virtual`
|
||||||
|
# please run `bazel run basic_content/inline:main`
|
||||||
|
load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
|
||||||
|
|
||||||
|
cc_library(
|
||||||
|
name = "inline",
|
||||||
|
hdrs = ["inline.h"],
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "inline_virtual",
|
||||||
|
srcs = ["inline_virtual.cpp"],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
|
|
||||||
|
cc_binary(
|
||||||
|
name = "main",
|
||||||
|
srcs = ["inline.cpp"],
|
||||||
|
deps = [
|
||||||
|
":inline",
|
||||||
|
],
|
||||||
|
copts = ["-std=c++11"]
|
||||||
|
)
|
||||||
@ -27,7 +27,7 @@ public:
|
|||||||
{
|
{
|
||||||
|
|
||||||
};
|
};
|
||||||
void f1(int x); ///< 声明后，要想成为内联函数，必须在定义处加inline关键字。
|
void f2(int x); ///< 声明后，要想成为内联函数，必须在定义处加inline关键字。
|
||||||
};
|
};
|
||||||
```
|
```
|
||||||
|
|
||||||
@ -128,7 +128,7 @@ int main()
|
|||||||
delete ptr;
|
delete ptr;
|
||||||
ptr = nullptr;
|
ptr = nullptr;
|
||||||
|
|
||||||
system("pause");
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
```
|
```
|
||||||
|
|||||||
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue
Block a user