DevWiki/CPlusPlusThings
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update RAII.md

Browse Source
This commit is contained in:
Francis 2022-04-10 17:36:44 +08:00 committed by GitHub
parent 03ee450eef
commit 70fb25143f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
codingStyleIdioms/3_RAII/RAII.md
View File

@ -66,7 +66,7 @@ vector<string> read_lines_from_file(string &file_name) {
string line; string line;
ifstream file_handle (file_name.c_str()); ifstream file_handle (file_name.c_str());
while (file_handle.good() && !file_handle.eof()) { while (file_handle.good() && !file_handle.eof() && file_handle.peek()!=EOF) {
getline(file_handle, line); getline(file_handle, line);
lines.push_back(line); lines.push_back(line);
} }
@ -89,7 +89,7 @@ int main(int argc, char* argv[]) {
输出： 输出：
```cpp ```cpp
File makefile contains 38 lines. File makefile contains 37 lines.
``` ```
这看起来很简单。`vector`被填满、返回和调用。然而，作为关心性能的高效程序员，这方面的一些问题困扰着我们:在return语句中，由于使用了值语义，`vector`在销毁之前不久就被复制到一个新`vector`中。 这看起来很简单。`vector`被填满、返回和调用。然而，作为关心性能的高效程序员，这方面的一些问题困扰着我们:在return语句中，由于使用了值语义，`vector`在销毁之前不久就被复制到一个新`vector`中。
@ -104,7 +104,7 @@ vector<string> * read_lines_from_file(string &file_name) {
string line; string line;
ifstream file_handle (file_name.c_str()); ifstream file_handle (file_name.c_str());
while (file_handle.good() && !file_handle.eof()) { while (file_handle.good() && !file_handle.eof() && file_handle.peek()!=EOF) {
getline(file_handle, line); getline(file_handle, line);
lines->push_back(line); lines->push_back(line);
} }
@ -147,7 +147,7 @@ vector<string> * read_lines_from_file(string &file_name) {
string line; string line;
ifstream file_handle (file_name.c_str()); ifstream file_handle (file_name.c_str());
while (file_handle.good() && !file_handle.eof()) { while (file_handle.good() && !file_handle.eof() && file_handle.peek()!=EOF) {
getline(file_handle, line); getline(file_handle, line);
lines->push_back(line); lines->push_back(line);
} }
@ -265,7 +265,7 @@ unique_ptr<vector<string>> read_lines_from_file(string &file_name) {
string line; string line;
ifstream file_handle (file_name.c_str()); ifstream file_handle (file_name.c_str());
while (file_handle.good() && !file_handle.eof()) { while (file_handle.good() && !file_handle.eof() && file_handle.peek()!=EOF) {
getline(file_handle, line); getline(file_handle, line);
lines->push_back(line); lines->push_back(line);
} }
@ -309,4 +309,4 @@ RAII代表“资源获取是初始化”。
> 1.https://www.toptal.com/software/eliminating-garbage-collector#remote-developer-job > 1.https://www.toptal.com/software/eliminating-garbage-collector#remote-developer-job
> 2.https://stackoverflow.com/questions/2321511/what-is-meant-by-resource-acquisition-is-initialization-raii > 2.https://stackoverflow.com/questions/2321511/what-is-meant-by-resource-acquisition-is-initialization-raii