from<numeric> https://en.cppreference.com/w/cpp/algorithm/partial_sum 计算前缀和很方便的函数 code: std::vector<long long > v(10, 2); // v = {2, 2, 2, 2, 2, 2

Master发布于 September 05,2024

IOstreams use streambufs to as their source / target of input / output. Effectively, the streambuf-family does all the work regarding IO and the IOstr

Master发布于 September 04,2024

#include <iostream> #include <queue> #include <cmath> #include <cstring> #include <array> #include <sstream> #include <vector> int main() { const

Master发布于 August 04,2024

intro: 在Utilities library下，头文件<bitset>内； The class template bitset represents a fixed-size sequence of N bits. Bitsets can be manipulated by standard

Master发布于 July 16,2024

原文 分类 Instead of being defined by specific types, each category of iterator is defined by the operations that can be performed on it.

Master发布于 July 04,2024

Basic skills Timer.1 - Using a timer synchronously 执行阻塞 All programs that use asio need to have at least one I/O execution context, such as an io_cont

Master发布于 June 04,2024

前置只是参考winsocket-cli 创建 WSADATA wsaData; int iResult; //initialize Winsock iResult= WSAStartup(MAKEWORD(2,2),&wsaData); if(iResult!

Master发布于 June 02,2024

microsoft Documents 初始环境：cmake stl23 环境配置： add_library(WS2 SHARED IMPORTED) set_target_properties(WS2 PROPERTIES IMPORTED_IMPLIB "C:\\Windows\

Master发布于 June 02,2024

简述： 所有继承自QObject的类都被对象树管理，自动释放内存； 实现： 重写QObject构造函数 #ifndef QTEST10_A_H #define QTEST10_A_H #include "QObject" #include <iostream> class A :public QOb

Master发布于 June 01,2024

简述： 在A类要使用B类对象时，一般会在A.h中添加B.h的头文件，当一个项目中东西太多时，会减慢编译速度，我们还有另一种实现方法，就是在A类头文件中声明b类，再在A.cpp中包含B.h 实现： A.h中： class B; B *b; 在A.cpp: #include "B.h" 总结： 避免了相

Master发布于 June 01,2024