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libevent+protobuf轻松搭建tcpserver - C/C++ - 清泛网 - 专注C/C++及内核技术
...er(int port);
// client端socket流程:socket(),connect()，返回连接的sockfd
int create_io_channel(const char *ipaddr, int port);
2. 搭建TCP Server
下面以伪代码方式给出，错误处理省略
int main(int argc, char *argv[])
{
// 初始化
…
// event初始...
What are the mechanics of short string optimization in libc++?
...ke to know in more detail how it works in practice, specifically in the libc++ implementation:
2 Answers
...
开屏动画使用指导 · App Inventor 2 中文网
...载成功后才开始计时。
联机调试需要使用包含该组件的新版本 AI 伴侣。安卓与鸿蒙都支持，积木写法相同。
开屏动画依赖网络图片时，请先确认应用已申请互联网权限。
快速上手
最简单的用法不需要任...
Rule-of-Three becomes Rule-of-Five with C++11?
...tor is considered deprecated. In particular, the following perfectly valid C++03 polymorphic base class
class C {
virtual ~C() { } // allow subtype polymorphism
};
should be rewritten as follows:
class C {
C(const C&) = default; // Copy constructor
C(C&&) = defa...
Why are private fields private to the type, not the instance?
...he modern programming world.
However, C# has admittedly looked hardest at C++ and Java for its language design. While Eiffel and Modula-3 were also in the picture, considering the many features of Eiffel missing (multiple inheritance) I believe they chose the same route as Java and C++ when it came...
“Least Astonishment” and the Mutable Default Argument
...imum of fuzz and confusion. As someone comming from systems programming in C++ and sometimes naively "translating" language features, this false friend kicked me in the in the soft of the head big time, just like class attributes. I understand why things are this way, but I cannot help but dislike i...
std::string formatting like sprintf
...ectly, because you don't have write access to the underlying buffer (until C++11; see Dietrich Epp's comment). You'll have to do it first in a c-string, then copy it into a std::string:
char buff[100];
snprintf(buff, sizeof(buff), "%s", "Hello");
std::string buffAsStdStr = buff;
But I'm not...
Use of 'const' for function parameters
...
Sometimes (too often!) I have to untangle someone else's C++ code. And we all know that someone else's C++ code is a complete mess almost by definition :) So the first thing I do to decipher local data flow is put const in every variable definition until compiler starts barking. Th...
App Inventor 2 实现上传文件到服务器全方案总结 · App Inventor 2 中文网
...现
Python 对应实现
原始文件上传与表单上传的区别
本文 PHP 后端已配套 Node.js 与 Python 版本，见页面中的对应实现；全部后端源码与运行说明。
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App Inventor 2 实现上传文件到服务器全方案总结
...
C pointers : pointing to an array of fixed size
...n is by using a pointer-to-array parameter
void foo(char (*p)[10]);
(in C++ language this is also done with references
void foo(char (&p)[10]);
).
This will enable language-level type checking, which will make sure that the array of exactly correct size is supplied as an argument. In fact...