比如说要从一个std::string中去除尾部所有的char c(通常是空白),书里头的函数是这样的: void rtrim(std::string& s, char c) { if (s.empty( )) return; std::string::iterator p; for (p = s.end( ); p != s.begin( ) && *--p == c;); if (*p != c) p++; s.erase(p, s....
使用CMAKE_CXX_COMPILER变量来指定C++编译器的路径。例如,如果你使用g++编译器,可以在CMakeLists.txt中添加以下内容: set(CMAKE_CXX_COMPILER g++) 2.2 检测操作系统使用CMAKE_SYSTEM_NAME变量来检测操作系统。例如,你可以在CMakeLists.txt中添加以下内容来为不同的操作系统定义不同的构建选项: if(WIN32) # 如果...
Secure Programming Cookbook for C and C++ is an important new resource for developers serious about writing secure code. It contains a wealth of solutions to problems faced by those who care about the security of their applications. It covers a wide range of topics, including safe initialization...
它并不直接映射到使用标准类型char*或wchar_t*(更多细节参考PEP 393)的C函数库。 因此,要在C中表示这个字符串数据,一些转换还是必须要的。 在PyArg_ParseTuple()中使用”s#” 和”u#”格式化码可以安全的执行这样的转换。 不过这种转换有个缺点就是它可能会导致原始字符串对象的尺寸增大。 一旦转换过后,会有一...
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内容简介:Despite its highly adaptable and flexible nature, C++ is also one of the more complex programming languages to learn. Once mastered, however, it can help you organize and process information with amazing efficiency and quickness. The C++ Cookbook will mak 作者简介:Ryan Stephens is a ...
{ ifstream source("c:\abc.txt"); //打开文件 char line[128]; try //定义异常 {if (source.fail()) throw "txt"; //抛掷异常 } catch(char * s) //定义异常处理 { cout<<"error opening the file "<<s<<endl; exit(1); } while(!source.eof()) ...
First in C/C++, the assembly language function, my_asm, must be declared external at the beginning of the C/C++ module. Then the assembly code can be called just like a C/++ function using the C/C++ statement my_asm(value). In the code below, LED1 blinks using the assembly language...
你要在C和Python直接来回转换字符串,但是C中的编码格式并不确定。 例如,可能C中的数据期望是UTF-8,但是并没有强制它必须是。 你想编写代码来以一种优雅的方式处理这些不合格数据,这样就不会让Python奔溃或者破坏进程中的字符串数据。 解决方案¶ 下面是一些C的数据和一个函数来演示这个问题: ...
本文的电子书版本:plink软件操作教程 「飞哥言:」plink软件是我平时工作中最常用的软件之一,它的特点有两个: 快功能强大快,真的是快,我用perl或者Python编写的代码运行需要50s,plink不到1s完成,在C语言面…