support bazel complie this project and format code.
This commit is contained in:
parent
1f86192576
commit
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6
.gitignore
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6
.gitignore
vendored
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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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112
.vscode/settings.json
vendored
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112
.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
@ -155,15 +155,15 @@
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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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### 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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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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@ -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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```
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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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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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- [=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.cpp](./c++2.0/c++11/alias.cpp)
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- [template_template.cpp](./c++2.0/c++11/template_template.cpp)
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- [alias.cpp](./cpp2.0/cpp11/alias.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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@ -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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- (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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@ -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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- [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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- [栈](./learn_class/modern_C++_30/RAII/stack.cpp)
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- [RAII](./learn_class/modern_C++_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)
|
||||
- [auto_ptr、scope_ptr](./learn_class/modern_C++_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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||||
- [shared_ptr](./learn_class/modern_C++_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)
|
||||
- [左值与右值](./learn_class/modern_C++_30/reference/reference.cpp)
|
||||
- [延长声明周期](./learn_class/modern_C++_30/reference/lifetime.cpp)
|
||||
- [引用折叠](./learn_class/modern_C++_30/reference/collapses.cpp)
|
||||
- [完美转发](./learn_class/modern_C++_30/reference/forward.cpp)
|
||||
- [不要返回本地变量的引用](./learn_class/modern_C++_30/reference/don'treturnReference.cpp)
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||||
- [容器 1](./learn_class/modern_C++_30/container1)
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- [容器 2](./learn_class/modern_C++_30/container2)
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||||
- [异常](./learn_class/modern_C++_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)
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||||
- [是不是应该返回对象?](./learn_class/modern_C++_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)
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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)
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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)
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||||
- [constexpr:一个常态的世界](./learn_class/modern_C++_30/constexpr)
|
||||
- [函数对象和 lambda:进入函数式编程](./learn_class/modern_C++_30/functionLambda)
|
||||
- [内存模型和 atomic:理解并发的复杂性](./learn_class/modern_C++_30/memorymodel_atomic)
|
||||
- [栈](./learn_class/modern_cpp_30/RAII/stack.cpp)
|
||||
- [RAII](./learn_class/modern_cpp_30/RAII/RAII.cpp)
|
||||
- [自己动手,实现 C++ 的智能指针](./learn_class/modern_cpp_30/smart_ptr)
|
||||
- [auto_ptr、scope_ptr](./learn_class/modern_cpp_30/smart_ptr/auto_scope.cpp)
|
||||
- [unique_ptr](./learn_class/modern_cpp_30/smart_ptr/unique_ptr.cpp)
|
||||
- [shared_ptr](./learn_class/modern_cpp_30/smart_ptr/shared_ptr.cpp)
|
||||
- [右值和移动究竟解决了什么问题?](./learn_class/modern_cpp_30/reference)
|
||||
- [左值与右值](./learn_class/modern_cpp_30/reference/reference.cpp)
|
||||
- [延长声明周期](./learn_class/modern_cpp_30/reference/lifetime.cpp)
|
||||
- [引用折叠](./learn_class/modern_cpp_30/reference/collapses.cpp)
|
||||
- [完美转发](./learn_class/modern_cpp_30/reference/forward.cpp)
|
||||
- [不要返回本地变量的引用](./learn_class/modern_cpp_30/reference/don'treturnReference.cpp)
|
||||
- [容器 1](./learn_class/modern_cpp_30/container1)
|
||||
- [容器 2](./learn_class/modern_cpp_30/container2)
|
||||
- [异常](./learn_class/modern_cpp_30/exception)
|
||||
- [字面量、静态断言和成员函数说明符](./learn_class/modern_cpp_30/literalAssert)
|
||||
- [是不是应该返回对象?](./learn_class/modern_cpp_30/returnObj)
|
||||
- [编译期多态:泛型编程和模板入门](./learn_class/modern_cpp_30/compilerpoly)
|
||||
- [译期能做些什么?一个完整的计算世界](./learn_class/modern_cpp_30/compilercompute)
|
||||
- [SFINAE:不是错误的替换失败是怎么回事?](./learn_class/modern_cpp_30/SFINAE)
|
||||
- [constexpr:一个常态的世界](./learn_class/modern_cpp_30/constexpr)
|
||||
- [函数对象和 lambda:进入函数式编程](./learn_class/modern_cpp_30/functionLambda)
|
||||
- [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
|
||||
|
||||
@ -376,20 +376,20 @@ map<int, int> mp{
|
||||
|
||||
|
||||
|
||||
### 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>
|
||||
<tbody>
|
||||
<tr>
|
||||
<th align="center" style="height=200 width="200">
|
||||
<img src="https://light-city.club/sc/assets/images/alipay.jpg" height="200" width="200" ><br>
|
||||
支付宝
|
||||
<img src="./img/cpp.jpg" height="200" width="200" ><br>
|
||||
星球
|
||||
</th>
|
||||
<th align="center" style="height=200 width="200">
|
||||
<img src="https://light-city.club/sc/assets/images/wechat.png" height="200" width="200" ><br>
|
||||
微信
|
||||
<img src="./img/wechat.jpg" height="200" width="200" ><br>
|
||||
微信公众号
|
||||
</th>
|
||||
</tr>
|
||||
</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)
|
||||
|
||||
- [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)
|
||||
- [stack](./learn_class/modern_C++_30/RAII/stack.cpp)
|
||||
- [RAII](./learn_class/modern_C++_30/RAII/RAII.cpp)
|
||||
- [Implementing smart pointers for C ++](./learn_class/modern_C++_30/smart_ptr)
|
||||
- [auto_ptr、scope_ptr](./learn_class/modern_C++_30/smart_ptr/auto_scope.cpp)
|
||||
- [unique_ptr](./learn_class/modern_C++_30/smart_ptr/unique_ptr.cpp)
|
||||
- [shared_ptr](./learn_class/modern_C++_30/smart_ptr/shared_ptr.cpp)
|
||||
- [What exactly does r value and move solve?](./learn_class/modern_C++_30/reference)
|
||||
- [L value and R value](./learn_class/modern_C++_30/reference/reference.cpp)
|
||||
- [Extend the declaration cycle](./learn_class/modern_C++_30/reference/lifetime.cpp)
|
||||
- [Reference folding](./learn_class/modern_C++_30/reference/collapses.cpp)
|
||||
- [Perfect forward](./learn_class/modern_C++_30/reference/forward.cpp)
|
||||
- [Do not return Reference](./learn_class/modern_C++_30/reference/don'treturnReference.cpp)
|
||||
- [Container 1](./learn_class/modern_C++_30/container1)
|
||||
- [Container 2](./learn_class/modern_C++_30/container2)
|
||||
- [Exception](./learn_class/modern_C++_30/exception)
|
||||
- [Literal、Static Assertion And Member Function Specifier](./learn_class/modern_C++_30/literalAssert)
|
||||
- [Return Object?](./learn_class/modern_C++_30/returnObj)c
|
||||
- [Getting started with generic programming and templates](./learn_class/modern_C++_30/compilerpoly)
|
||||
- [A whole Compiler Compute World](./learn_class/modern_C++_30/compilercompute)
|
||||
- [SFINAE:What is it if it is not replace error?](./learn_class/modern_C++_30/SFINAE)
|
||||
- [constexpr:A Normal World](./learn_class/modern_C++_30/constexpr)
|
||||
- [Function object and Lambda:functionLambda](./learn_class/modern_C++_30/functionLambda)
|
||||
- [Memory Model and Atomic:Understangding the complexity of concurrency](./learn_class/modern_C++_30/memorymodel_atomic)
|
||||
- [stack](./learn_class/modern_cpp_30/RAII/stack.cpp)
|
||||
- [RAII](./learn_class/modern_cpp_30/RAII/RAII.cpp)
|
||||
- [Implementing smart pointers for C ++](./learn_class/modern_cpp_30/smart_ptr)
|
||||
- [auto_ptr、scope_ptr](./learn_class/modern_cpp_30/smart_ptr/auto_scope.cpp)
|
||||
- [unique_ptr](./learn_class/modern_cpp_30/smart_ptr/unique_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_cpp_30/reference)
|
||||
- [L value and R value](./learn_class/modern_cpp_30/reference/reference.cpp)
|
||||
- [Extend the declaration cycle](./learn_class/modern_cpp_30/reference/lifetime.cpp)
|
||||
- [Reference folding](./learn_class/modern_cpp_30/reference/collapses.cpp)
|
||||
- [Perfect forward](./learn_class/modern_cpp_30/reference/forward.cpp)
|
||||
- [Do not return Reference](./learn_class/modern_cpp_30/reference/don'treturnReference.cpp)
|
||||
- [Container 1](./learn_class/modern_cpp_30/container1)
|
||||
- [Container 2](./learn_class/modern_cpp_30/container2)
|
||||
- [Exception](./learn_class/modern_cpp_30/exception)
|
||||
- [Literal、Static Assertion And Member Function Specifier](./learn_class/modern_cpp_30/literalAssert)
|
||||
- [Return Object?](./learn_class/modern_cpp_30/returnObj)c
|
||||
- [Getting started with generic programming and templates](./learn_class/modern_cpp_30/compilerpoly)
|
||||
- [A whole Compiler Compute World](./learn_class/modern_cpp_30/compilercompute)
|
||||
- [SFINAE:What is it if it is not replace error?](./learn_class/modern_cpp_30/SFINAE)
|
||||
- [constexpr:A Normal World](./learn_class/modern_cpp_30/constexpr)
|
||||
- [Function object and Lambda:functionLambda](./learn_class/modern_cpp_30/functionLambda)
|
||||
- [Memory Model and Atomic:Understangding the complexity of concurrency](./learn_class/modern_cpp_30/memorymodel_atomic)
|
||||
|
||||
### 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!
|
||||
|
||||
> 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
|
||||
|
||||
|
@ -1,27 +1,28 @@
|
||||
/**
|
||||
* @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
|
||||
* @author 光城
|
||||
* @version v1
|
||||
* @date 2019-07-20
|
||||
*/
|
||||
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
class A {
|
||||
public:
|
||||
virtual void f() = 0; // 纯虚函数
|
||||
void g(){ this->f(); }
|
||||
A(){}
|
||||
virtual void f() = 0; // 纯虚函数
|
||||
void g() { this->f(); }
|
||||
A() {}
|
||||
};
|
||||
class B:public A{
|
||||
class B : public A {
|
||||
public:
|
||||
void f(){ cout<<"B:f()"<<endl;}
|
||||
void f() { cout << "B:f()" << endl; }
|
||||
};
|
||||
int main(){
|
||||
B b;
|
||||
b.g();
|
||||
return 0;
|
||||
int main() {
|
||||
B b;
|
||||
b.g();
|
||||
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
|
||||
*/
|
||||
|
||||
#include<iostream>
|
||||
using namespace std;
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
class Base
|
||||
{
|
||||
int x;
|
||||
public:
|
||||
virtual void fun() = 0;
|
||||
int getX() { return x; }
|
||||
};
|
||||
class Base {
|
||||
int x;
|
||||
|
||||
class Derived: public Base
|
||||
{
|
||||
int y;
|
||||
public:
|
||||
void fun() { cout << "fun() called"; } // 实现了fun()函数
|
||||
};
|
||||
public:
|
||||
virtual void fun() = 0;
|
||||
int getX() { return x; }
|
||||
};
|
||||
|
||||
int main(void)
|
||||
{
|
||||
Derived d;
|
||||
d.fun();
|
||||
return 0;
|
||||
}
|
||||
class Derived : public Base {
|
||||
public:
|
||||
void fun() { cout << "fun() called"; } // 实现了fun()函数
|
||||
};
|
||||
|
||||
int main(void) {
|
||||
Derived d;
|
||||
d.fun();
|
||||
return 0;
|
||||
}
|
||||
|
@ -6,23 +6,21 @@
|
||||
* @date 2019-07-20
|
||||
*/
|
||||
|
||||
#include<iostream>
|
||||
using namespace std;
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
/**
|
||||
* @brief 抽象类至少包含一个纯虚函数
|
||||
*/
|
||||
class Test
|
||||
{
|
||||
int x;
|
||||
public:
|
||||
virtual void show() = 0;
|
||||
int getX() { return x; }
|
||||
};
|
||||
class Test {
|
||||
int x;
|
||||
|
||||
int main(void)
|
||||
{
|
||||
Test t; //error! 不能创建抽象类的对象
|
||||
return 0;
|
||||
}
|
||||
public:
|
||||
virtual void show() = 0;
|
||||
int getX() { return x; }
|
||||
};
|
||||
|
||||
int main(void) {
|
||||
Test t; // error! 不能创建抽象类的对象
|
||||
return 0;
|
||||
}
|
||||
|
@ -6,33 +6,28 @@
|
||||
* @date 2019-07-20
|
||||
*/
|
||||
|
||||
#include<iostream>
|
||||
using namespace std;
|
||||
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
/**
|
||||
* @brief 抽象类至少包含一个纯虚函数
|
||||
*/
|
||||
class Base
|
||||
{
|
||||
int x;
|
||||
public:
|
||||
virtual void show() = 0;
|
||||
int getX() { return x; }
|
||||
|
||||
};
|
||||
class Derived: public Base
|
||||
{
|
||||
public:
|
||||
void show() { cout << "In Derived \n"; }
|
||||
Derived(){}
|
||||
};
|
||||
int main(void)
|
||||
{
|
||||
//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;
|
||||
}
|
||||
class Base {
|
||||
int x;
|
||||
|
||||
public:
|
||||
virtual void show() = 0;
|
||||
int getX() { return x; }
|
||||
};
|
||||
class Derived : public Base {
|
||||
public:
|
||||
void show() { cout << "In Derived \n"; }
|
||||
Derived() {}
|
||||
};
|
||||
int main(void) {
|
||||
// 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
|
||||
*/
|
||||
|
||||
#include<iostream>
|
||||
using namespace std;
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
class Base
|
||||
{
|
||||
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;
|
||||
}
|
||||
class Base {
|
||||
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;
|
||||
}
|
||||
|
@ -6,30 +6,29 @@
|
||||
* @date 2019-07-20
|
||||
*/
|
||||
|
||||
#include<iostream>
|
||||
using namespace std;
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
// An abstract class with constructor
|
||||
class Base
|
||||
{
|
||||
protected:
|
||||
int x;
|
||||
public:
|
||||
virtual void fun() = 0;
|
||||
Base(int i) { x = i; }
|
||||
};
|
||||
// An abstract class with constructor
|
||||
class Base {
|
||||
protected:
|
||||
int x;
|
||||
|
||||
class Derived: public Base
|
||||
{
|
||||
int y;
|
||||
public:
|
||||
Derived(int i, int j):Base(i) { y = j; }
|
||||
void fun() { cout << "x = " << x << ", y = " << y; }
|
||||
};
|
||||
public:
|
||||
virtual void fun() = 0;
|
||||
Base(int i) { x = i; }
|
||||
};
|
||||
|
||||
int main(void)
|
||||
{
|
||||
Derived d(4, 5);
|
||||
d.fun();
|
||||
return 0;
|
||||
}
|
||||
class Derived : public Base {
|
||||
int y;
|
||||
|
||||
public:
|
||||
Derived(int i, int j) : Base(i) { y = j; }
|
||||
void fun() { cout << "x = " << x << ", y = " << y; }
|
||||
};
|
||||
|
||||
int main(void) {
|
||||
Derived d(4, 5);
|
||||
d.fun();
|
||||
return 0;
|
||||
}
|
||||
|
@ -7,24 +7,23 @@
|
||||
* @version v1
|
||||
* @date 2019-07-20
|
||||
*/
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
class Base {
|
||||
public:
|
||||
Base() { cout << "Constructor: Base" << endl; }
|
||||
virtual ~Base() { cout << "Destructor : Base" << endl; }
|
||||
class Base {
|
||||
public:
|
||||
Base() { cout << "Constructor: Base" << endl; }
|
||||
virtual ~Base() { cout << "Destructor : Base" << endl; }
|
||||
};
|
||||
|
||||
class Derived: public Base {
|
||||
public:
|
||||
Derived() { cout << "Constructor: Derived" << endl; }
|
||||
~Derived() { cout << "Destructor : Derived" << endl; }
|
||||
class Derived : public Base {
|
||||
public:
|
||||
Derived() { cout << "Constructor: Derived" << endl; }
|
||||
~Derived() { cout << "Destructor : Derived" << endl; }
|
||||
};
|
||||
|
||||
int main() {
|
||||
Base *Var = new Derived();
|
||||
delete Var;
|
||||
return 0;
|
||||
int main() {
|
||||
Base *Var = new Derived();
|
||||
delete Var;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -2,33 +2,31 @@
|
||||
* @file pure_virtual.cpp
|
||||
* @brief 纯虚函数:没有函数体的虚函数
|
||||
* 抽象类:包含纯虚函数的类
|
||||
*
|
||||
*
|
||||
* @author 光城
|
||||
* @version v1
|
||||
* @date 2019-07-20
|
||||
*/
|
||||
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
|
||||
using namespace std;
|
||||
class A
|
||||
{
|
||||
class A {
|
||||
private:
|
||||
int a;
|
||||
int a;
|
||||
|
||||
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()
|
||||
{
|
||||
/*
|
||||
* 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 *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;
|
||||
|
||||
/* Some big code in between and let's say x
|
||||
* is accidentally changed to 9 */
|
||||
* is accidentally changed to 9
|
||||
*/
|
||||
x = 9;
|
||||
|
||||
// Programmer assumes x to be 7 in rest of the code
|
||||
|
@ -11,7 +11,6 @@
|
||||
#include<assert.h>
|
||||
|
||||
int main(){
|
||||
int x=7;
|
||||
assert(x==5);
|
||||
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。
|
||||
|
||||
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
|
||||
|
||||
|
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>
|
||||
|
||||
using namespace std;
|
||||
class A
|
||||
{
|
||||
public:
|
||||
virtual void f()//虚函数实现
|
||||
{
|
||||
cout << "Base A::f() " << endl;
|
||||
}
|
||||
class A {
|
||||
public:
|
||||
virtual void f() //虚函数实现
|
||||
{
|
||||
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:
|
||||
virtual void f()//虚函数实现,子类中virtual关键字可以没有
|
||||
{
|
||||
cout << "Derived B::f() " << endl;
|
||||
}
|
||||
public:
|
||||
virtual void f() //虚函数实现,子类中virtual关键字可以没有
|
||||
{
|
||||
cout << "Derived B::f() " << endl;
|
||||
}
|
||||
};
|
||||
|
||||
int main() {
|
||||
A a; //基类对象
|
||||
B b; //派生类对象
|
||||
|
||||
int main()
|
||||
{
|
||||
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->f(); //调用父类的函数
|
||||
|
||||
A* pa = &a;//父类指针指向父类对象
|
||||
pa->f();//调用父类的函数
|
||||
|
||||
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;
|
||||
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;
|
||||
|
||||
};
|
||||
//main.cpp
|
||||
#include<iostream>
|
||||
#include"apple.cpp"
|
||||
using namespace std;
|
||||
|
||||
Apple::Apple(int i):apple_number(i)
|
||||
// apple.cpp
|
||||
Apple::Apple(int i) : apple_number(i)
|
||||
{
|
||||
|
||||
}
|
||||
int Apple::add(){
|
||||
take(1);
|
||||
int Apple::add(int num)
|
||||
{
|
||||
take(num);
|
||||
return 0;
|
||||
}
|
||||
int Apple::add(int num) const{
|
||||
int Apple::add(int num) const
|
||||
{
|
||||
take(num);
|
||||
return num;
|
||||
return 0;
|
||||
}
|
||||
void Apple::take(int num) const
|
||||
{
|
||||
cout<<"take func "<<num<<endl;
|
||||
std::cout << "take func " << num << std::endl;
|
||||
}
|
||||
int Apple::getCount() const
|
||||
{
|
||||
take(1);
|
||||
add(); // error
|
||||
// add(); //error
|
||||
return apple_number;
|
||||
}
|
||||
int main(){
|
||||
int main()
|
||||
{
|
||||
Apple a(2);
|
||||
cout<<a.getCount()<<endl;
|
||||
cout << a.getCount() << endl;
|
||||
a.add(10);
|
||||
const Apple b(3);
|
||||
b.add(100);
|
||||
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。
|
||||
|
||||
|
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
|
||||
{
|
||||
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;
|
||||
};
|
||||
#include "apple.h"
|
||||
#include <iostream>
|
||||
|
||||
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.cpp"
|
||||
#include "apple.h"
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
Apple::Apple(int i)
|
||||
{
|
||||
|
||||
}
|
||||
int Apple::add(int num){
|
||||
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;
|
||||
a.add(10);
|
||||
const Apple b(3);
|
||||
b.add(100);
|
||||
return 0;
|
||||
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
|
||||
{
|
||||
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;
|
||||
};
|
||||
#include "apple.h"
|
||||
#include <iostream>
|
||||
|
||||
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.cpp"
|
||||
#include "apple.h"
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
Apple::Apple(int i):apple_number(i)
|
||||
{
|
||||
|
||||
}
|
||||
int Apple::add(int num){
|
||||
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;
|
||||
a.add(10);
|
||||
const Apple b(3);
|
||||
b.add(100);
|
||||
return 0;
|
||||
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
|
||||
{
|
||||
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;
|
||||
};
|
||||
#include "apple.h"
|
||||
#include <iostream>
|
||||
|
||||
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.cpp"
|
||||
using namespace std;
|
||||
const int Apple::apple_number=10;
|
||||
#include<iostream>
|
||||
#include"apple.cpp"
|
||||
#include "apple.h"
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
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
|
||||
{
|
||||
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;
|
||||
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
|
||||
{
|
||||
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;
|
||||
};
|
||||
#include "apple.h"
|
||||
#include <iostream>
|
||||
|
||||
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.cpp"
|
||||
using namespace std;
|
||||
const int Apple::apple_number=10;
|
||||
int Apple::ap=666;
|
||||
Apple::Apple(int i)
|
||||
{
|
||||
|
||||
}
|
||||
int Apple::add(int num){
|
||||
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;
|
||||
#include "apple.h"
|
||||
#include <iostream>
|
||||
int main() {
|
||||
Apple a(2);
|
||||
std::cout << a.getCount() << std::endl;
|
||||
std::cout << a.ap << std::endl;
|
||||
a.add(10);
|
||||
const Apple b(3);
|
||||
b.add(100);
|
||||
return 0;
|
||||
}
|
||||
|
@ -1,11 +1,9 @@
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
void f(const int i){
|
||||
i=10; // error: assignment of read-only parameter ‘i’
|
||||
cout<<i<<endl;
|
||||
void f(const int i) {
|
||||
i = 10; // error: assignment of read-only parameter ‘i’
|
||||
cout << i << endl;
|
||||
}
|
||||
|
||||
int main(){
|
||||
f(1);
|
||||
}
|
||||
int main() { f(1); }
|
||||
|
@ -1,8 +1,8 @@
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
int main(){
|
||||
const int b = 10;
|
||||
b = 0; //error
|
||||
const string s = "helloworld";
|
||||
const int i,j=0;
|
||||
int main() {
|
||||
const int b = 10;
|
||||
b = 0; // error
|
||||
const string s = "helloworld";
|
||||
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
|
||||
* compile: g++ -o file const_file2.cpp const_file1.cpp
|
||||
* execute: ./file
|
||||
*/
|
||||
extern const int ext;
|
||||
int main(){
|
||||
|
||||
std::cout<<ext<<std::endl;
|
||||
}
|
||||
int main() { std::cout << ext << std::endl; }
|
@ -1 +1 @@
|
||||
int ext;
|
||||
int ext;
|
@ -1,11 +1,8 @@
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
/**
|
||||
* by 光城
|
||||
* compile: g++ -o file file2.cpp file1.cpp
|
||||
* execute: ./file
|
||||
*/
|
||||
extern int ext;
|
||||
int main(){
|
||||
|
||||
std::cout<<(ext+10)<<std::endl;
|
||||
}
|
||||
int main() { 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;
|
||||
|
||||
|
||||
int main(){
|
||||
const int *ptr;
|
||||
*ptr=10; //error
|
||||
int main() {
|
||||
const int *ptr;
|
||||
*ptr = 10; // error
|
||||
}
|
||||
|
@ -1,9 +1,8 @@
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
|
||||
int main(){
|
||||
const int p = 10;
|
||||
const void *vp = &p;
|
||||
void *vp = &p; //error
|
||||
int main() {
|
||||
const int p = 10;
|
||||
const void *vp = &p;
|
||||
void *vp = &p; // error
|
||||
}
|
||||
|
@ -1,12 +1,11 @@
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
int main(){
|
||||
const int *ptr;
|
||||
int val = 3;
|
||||
ptr = &val; //ok
|
||||
int *ptr1 = &val;
|
||||
*ptr1=4;
|
||||
cout<<*ptr<<endl;
|
||||
|
||||
int main() {
|
||||
const int *ptr;
|
||||
int val = 3;
|
||||
ptr = &val; // ok
|
||||
int *ptr1 = &val;
|
||||
*ptr1 = 4;
|
||||
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;
|
||||
int main(){
|
||||
|
||||
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 * t = #
|
||||
*t = 1;
|
||||
cout<<*ptr<<endl;
|
||||
int main() {
|
||||
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 *t = #
|
||||
*t = 1;
|
||||
cout << *ptr << endl;
|
||||
}
|
||||
|
@ -1,8 +1,7 @@
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
int main(){
|
||||
|
||||
const int num=0;
|
||||
int * const ptr=# //error! const int* -> int*
|
||||
cout<<*ptr<<endl;
|
||||
int main() {
|
||||
const int num = 0;
|
||||
int *const ptr = # // error! const int* -> int*
|
||||
cout << *ptr << endl;
|
||||
}
|
||||
|
Binary file not shown.
@ -1,8 +1,7 @@
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
int main(){
|
||||
|
||||
const int num=10;
|
||||
const int * const ptr=# //error! const int* -> int*
|
||||
cout<<*ptr<<endl;
|
||||
int main() {
|
||||
const int num = 10;
|
||||
const int *const ptr = # // error! const int* -> int*
|
||||
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;
|
||||
|
||||
int main(){
|
||||
|
||||
const int p = 3;
|
||||
const int * const ptr = &p;
|
||||
cout<<*ptr<<endl;
|
||||
|
||||
int main() {
|
||||
const int p = 3;
|
||||
const int *const ptr = &p;
|
||||
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 <vector>
|
||||
using namespace std;
|
||||
@ -14,47 +6,42 @@ using namespace std;
|
||||
*/
|
||||
template <typename T>
|
||||
|
||||
auto multiply(T x, T y)->decltype(x*y)
|
||||
{
|
||||
return x*y;
|
||||
auto multiply(T x, T y) -> decltype(x * y) {
|
||||
return x * y;
|
||||
}
|
||||
|
||||
int main()
|
||||
{
|
||||
int nums[] = {1,2,3,4};
|
||||
vector<int> vec(nums,nums+4);
|
||||
vector<int>::iterator it;
|
||||
int main() {
|
||||
int nums[] = {1, 2, 3, 4};
|
||||
vector<int> vec(nums, nums + 4);
|
||||
vector<int>::iterator it;
|
||||
|
||||
for(it=vec.begin();it!=vec.end();it++)
|
||||
cout<<*it<<" ";
|
||||
cout<<endl;
|
||||
for (it = vec.begin(); it != vec.end(); it++)
|
||||
cout << *it << " ";
|
||||
cout << endl;
|
||||
|
||||
using nullptr_t = decltype(nullptr);
|
||||
nullptr_t nu;
|
||||
int *p = NULL;
|
||||
if (p == nu)
|
||||
cout << "NULL" << endl;
|
||||
|
||||
using nullptr_t = decltype(nullptr);
|
||||
nullptr_t nu;
|
||||
int * p =NULL;
|
||||
if(p==nu)
|
||||
cout<<"NULL"<<endl;
|
||||
typedef decltype(vec.begin()) vectype;
|
||||
|
||||
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++)
|
||||
cout<<*i<<" ";
|
||||
cout<<endl;
|
||||
decltype(anon_s) as{1, 2.0}; // 定义了一个上面匿名的结构体
|
||||
|
||||
/**
|
||||
* 匿名结构体
|
||||
*/
|
||||
struct
|
||||
{
|
||||
int d ;
|
||||
double b;
|
||||
}anon_s;
|
||||
cout << multiply(11, 2) << ":" << as.b << endl;
|
||||
|
||||
decltype(anon_s) as; // 定义了一个上面匿名的结构体
|
||||
|
||||
cout<<multiply(11,2)<<endl;
|
||||
|
||||
return 0;
|
||||
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:
|
||||
|
||||
```c++
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
enum Color {RED,BLUE};
|
||||
enum Feeling {EXCITED,BLUE};
|
||||
|
||||
int main()
|
||||
enum Color
|
||||
{
|
||||
RED,
|
||||
BLUE
|
||||
};
|
||||
enum Feeling
|
||||
{
|
||||
EXCITED,
|
||||
BLUE
|
||||
};
|
||||
|
||||
int main()
|
||||
{
|
||||
Color a = BLUE; // error
|
||||
Feeling b = EXCITED;
|
||||
std::cout << a << ":" << b << std::endl;
|
||||
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>
|
||||
using namespace std;
|
||||
/**
|
||||
* @brief namespace解决作用域不受限
|
||||
*/
|
||||
namespace Color
|
||||
{
|
||||
enum Type
|
||||
{
|
||||
RED=15,
|
||||
YELLOW,
|
||||
BLUE
|
||||
};
|
||||
namespace Color {
|
||||
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,
|
||||
* 二是因为它只包含数据没有成员函数。
|
||||
*/
|
||||
struct Color1
|
||||
{
|
||||
enum Type
|
||||
{
|
||||
RED=102,
|
||||
YELLOW,
|
||||
BLUE
|
||||
};
|
||||
struct Color1 {
|
||||
enum Type { RED = 102, YELLOW, BLUE };
|
||||
};
|
||||
|
||||
/**
|
||||
* @brief C++11的枚举类
|
||||
* 下面等价于enum class Color2:int
|
||||
*/
|
||||
enum class Color2
|
||||
{
|
||||
RED=2,
|
||||
YELLOW,
|
||||
BLUE
|
||||
};
|
||||
enum class Color2 { RED = 2, YELLOW, BLUE };
|
||||
|
||||
enum class Color3:char; // 前向声明
|
||||
enum class Color3 : char; // 前向声明
|
||||
|
||||
// 定义
|
||||
enum class Color3:char
|
||||
{
|
||||
RED='r',
|
||||
BLUE
|
||||
};
|
||||
enum class Color3 : char { RED = 'r', BLUE };
|
||||
|
||||
int main()
|
||||
{
|
||||
// 定义新的枚举变量
|
||||
Color::Type c = Color::RED;
|
||||
cout<<c<<endl;
|
||||
/**
|
||||
* 上述的另一种方法:
|
||||
* using namespace Color; // 定义新的枚举变量
|
||||
* Type c = RED;
|
||||
*/
|
||||
Color1 c1;
|
||||
cout<<c1.RED<<endl;
|
||||
int main() {
|
||||
// 定义新的枚举变量
|
||||
Color::Type c = Color::RED;
|
||||
cout << c << endl;
|
||||
/**
|
||||
* 上述的另一种方法:
|
||||
* using namespace Color; // 定义新的枚举变量
|
||||
* Type c = RED;
|
||||
*/
|
||||
Color1 c1;
|
||||
cout << c1.RED << endl;
|
||||
|
||||
Color1::Type c11 = Color1::BLUE;
|
||||
cout<<c11<<endl;
|
||||
|
||||
Color2 c2 = Color2::RED;
|
||||
cout << static_cast<int>(c2) << endl;
|
||||
|
||||
char c3 = static_cast<char>(Color3::RED);
|
||||
cout<<c3<<endl;
|
||||
return 0;
|
||||
Color1::Type c11 = Color1::BLUE;
|
||||
cout << c11 << endl;
|
||||
|
||||
Color2 c2 = Color2::RED;
|
||||
cout << static_cast<int>(c2) << endl;
|
||||
|
||||
char c3 = static_cast<char>(Color3::RED);
|
||||
cout << c3 << endl;
|
||||
return 0;
|
||||
}
|
||||
|
@ -1,10 +1,12 @@
|
||||
#include <iostream>
|
||||
using namespace std;
|
||||
|
||||
enum Color {RED,BLUE};
|
||||
enum Feeling {EXCITED,BLUE};
|
||||
enum Color { RED, BLUE };
|
||||
enum Feeling { EXCITED, BLUE };
|
||||
|
||||
int main()
|
||||
{
|
||||
return 0;
|
||||
int main() {
|
||||
Color a = BLUE; // error
|
||||
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;
|
||||
|
||||
struct A
|
||||
{
|
||||
A(int) { }
|
||||
operator bool() const { return true; }
|
||||
struct A {
|
||||
A(int) {}
|
||||
operator bool() const { return true; }
|
||||
};
|
||||
|
||||
struct B
|
||||
{
|
||||
explicit B(int) {}
|
||||
explicit operator bool() const { return true; }
|
||||
struct B {
|
||||
explicit B(int) {}
|
||||
explicit operator bool() const { return true; }
|
||||
};
|
||||
|
||||
void doA(A a) {}
|
||||
|
||||
void doB(B b) {}
|
||||
|
||||
int main()
|
||||
{
|
||||
A a1(1); // OK:直接初始化
|
||||
A a2 = 1; // OK:复制初始化
|
||||
A a3{ 1 }; // OK:直接列表初始化
|
||||
A a4 = { 1 }; // OK:复制列表初始化
|
||||
A 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
|
||||
if (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 a8 = static_cast<bool>(a1); // OK :static_cast 进行直接初始化
|
||||
int main() {
|
||||
A a1(1); // OK:直接初始化
|
||||
A a2 = 1; // OK:复制初始化
|
||||
A a3{1}; // OK:直接列表初始化
|
||||
A a4 = {1}; // OK:复制列表初始化
|
||||
A 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
|
||||
if (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 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 b2 = 1; // 错误:被 explicit 修饰构造函数的对象不可以复制初始化
|
||||
B b3{ 1 }; // OK:直接列表初始化
|
||||
// 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 b5 = (B)1; // OK:允许 static_cast 的显式转换
|
||||
// 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
|
||||
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
|
||||
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 b3{1}; // OK:直接列表初始化
|
||||
// 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 b5 = (B)1; // OK:允许 static_cast 的显式转换
|
||||
// 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
|
||||
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"
|
||||
}
|
||||
int main() {
|
||||
add(2,3);
|
||||
std::cout << add(2, 3) << std::endl;
|
||||
return 0;
|
||||
}
|
||||
```
|
||||
@ -99,6 +99,8 @@ gcc -c add.c
|
||||
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:
|
||||
|
||||
```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>
|
||||
using namespace std;
|
||||
extern "C" {
|
||||
#include "add.h"
|
||||
#include "add.h"
|
||||
}
|
||||
int main() {
|
||||
add(2,3);
|
||||
return 0;
|
||||
std::cout << add(2, 3) << std::endl;
|
||||
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
|
||||
#define ADD_H
|
||||
extern int add(int x,int y);
|
||||
extern int add(int x, int y);
|
||||
#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"
|
||||
|
||||
int add(int x,int y) {
|
||||
return x+y;
|
||||
}
|
||||
int add(int x, int 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
|
||||
#define ADD_H
|
||||
extern "C" {
|
||||
int add(int x,int y);
|
||||
int add(int x, int y);
|
||||
}
|
||||
#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;
|
||||
|
||||
class A
|
||||
{
|
||||
class A {
|
||||
public:
|
||||
A(int _a):a(_a){};
|
||||
friend class B;
|
||||
A(int _a) : a(_a){};
|
||||
friend class B;
|
||||
|
||||
private:
|
||||
int a;
|
||||
int a;
|
||||
};
|
||||
|
||||
class B
|
||||
{
|
||||
class B {
|
||||
public:
|
||||
int getb(A ca) {
|
||||
return ca.a;
|
||||
};
|
||||
int getb(A ca) { return ca.a; };
|
||||
};
|
||||
|
||||
int main()
|
||||
{
|
||||
A a(3);
|
||||
B b;
|
||||
cout<<b.getb(a)<<endl;
|
||||
return 0;
|
||||
int main() {
|
||||
A a(3);
|
||||
B b;
|
||||
cout << b.getb(a) << endl;
|
||||
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>
|
||||
|
||||
using namespace std;
|
||||
|
||||
class A
|
||||
{
|
||||
class A {
|
||||
public:
|
||||
A(int _a):a(_a){};
|
||||
friend int geta(A &ca); ///< 友元函数
|
||||
A(int _a) : a(_a){};
|
||||
friend int geta(A &ca); ///< 友元函数
|
||||
private:
|
||||
int a;
|
||||
int a;
|
||||
};
|
||||
|
||||
int geta(A &ca)
|
||||
{
|
||||
return ca.a;
|
||||
}
|
||||
int geta(A &ca) { return ca.a; }
|
||||
|
||||
int main()
|
||||
{
|
||||
A a(3);
|
||||
cout<<geta(a)<<endl;
|
||||
int main() {
|
||||
A a(3);
|
||||
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.
@ -6,28 +6,26 @@
|
||||
* @date 2019-07-20
|
||||
*/
|
||||
|
||||
#include<iostream>
|
||||
#include <iostream>
|
||||
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);
|
||||
|
||||
/**
|
||||
* @brief 代表一种新类型,不是变量!所以与上述的pFun不一样!
|
||||
*/
|
||||
typedef void (*func)(void);
|
||||
typedef void (*func)(void);
|
||||
|
||||
void myfunc(void)
|
||||
{
|
||||
cout<<"asda"<<endl;
|
||||
}
|
||||
void myfunc(void) { cout << "asda" << endl; }
|
||||
|
||||
void glFun(int a){ cout<<a<<endl;}
|
||||
int main(){
|
||||
func pfun = myfunc;/*赋值*/
|
||||
pfun();/*调用*/
|
||||
pFun = glFun;
|
||||
(*pFun)(2);
|
||||
void glFun(int a) { cout << a << endl; }
|
||||
int main() {
|
||||
func pfun = myfunc; /*赋值*/
|
||||
pfun(); /*调用*/
|
||||
pFun = glFun;
|
||||
(*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"]
|
||||
)
|
Some files were not shown because too many files have changed in this diff Show More
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Reference in New Issue
Block a user