From all the material I used to learn C++, auto has always been a weird storage duration specifier that didn't serve any purpose. But just recently, I encountered code that used it as a type name in and of itself. Out of curiosity I tried it, and it assumes the type of whatever I happen to assig...

Is there a way to write this C/C++ code in Python? a = (b == true ? "123" : "456" ) 4 Answers ...

... @doctorram NO! 1. the quotation marks you are using are invalid C++; 2. even if you meant s = "" + c it's just UB because it does not mean "concatenate the empty string with the character c", it means "the pointer to some copy of an empty string, advanced by the numeric value of c (which ...

c++ ostream，ostringstream基本用法（使用'

[工程源码实例] C++ ADO 读写Excel源码及注意点工程源码下载：excel-ado.zip运行结果截图：生成的Ｅｘｃｅｌ截图：主要代码片段： 导入Excel COM支持。。。不过程序编译后即使客户机没...工程源码下载：excel-ado.zip 运行结果截图：...

C++ 智能指针shared_ptr,weak_ptr,shared_from_this实践new XXX(shared_from_this()) 如果用强指针去接，则增加引用计数；弱引用去接，不增加引用计数。auto去接等同强指针。weak_ptr 传给thread、timer回调，不能使用expired()判断 new XXX(shared_from_thi...

windows C++ gbk转为utf-8在windows与linux系统通过socket的传输数据里，如果传输中文字符，因为windows和linux使用的编码不同,所以需要将windows下的中文编码转换为 在windows与linux系统通过socket的传输数据里，如果传输中文字符，因为windo...

c++ volatile关键字简析volatile防范冲突，提高效率。降低CPU Cache Line锁冲突的几率。不同于普通变量在于：CPU缓存中有值的话，也得从内存中重新加载到缓存（普通变量不会）；即认为寄存器值不可靠， volatile 防范冲突，提高效...

Eclipse C++启用pretty printing，更直观显示stl变量内容enable-pretty-printing-in-eclipse-cdt使用Eclipse CDT调试stl变量时，我们关注的变量内容往往需要查看好几层的变量后才能看到，非常的不直观。这里提供一种更优雅地打印stl变量的方法，...

...ildfrm.h(73): error C4430: 缺少类型说明符 - 假定为 int。注意: C++ 不支持默认 int 一般这个错误是没有include头文件导致， 仔细检查下 .h 中是不是定义类成员变量时没有包含相应的头文件。 拓展： .h中定义类对象成员变量必须i...