开了一个新坑，在看UE的多线程，发现在UE5/Source/Runtime/Core/HAL/Allocators/ThreadSafeBool.h下有： ////////////////////////////////////////////////////////////////////////

Master发布于 December 07,2024

Duration 表示一个实践段，由时刻（tick)和时刻数组成 std::chrono::duration<int,std::ratio<3600>> hours(1); std::chrono::duration<int,std::ratio<60>> minutes(14); std::

Master发布于 December 06,2024

std::ratio提供了编译器有理数支持 定义如下： template< std::intmax_t Num, std::intmax_t Denom = 1 > class ratio; 其中std::intmax_t是编译器常量，分母不能是0，通知分子和分母不能是最大的负值

Master发布于 December 04,2024

用于字符串数字和数字值的转化，包含进制转换 主要由from_chars和to_chars两个函数组及其结果类组成。 Functions from_chars On success, returns a value of type std::from_chars_result

Master发布于 September 05,2024

Main Classes basic_regex 正则表达式的模板类，使用正则表达式初始化，需搭配其他helper class使用 // Matches one or more digits const std::string text1="hello 114514hell999o"

Master发布于 September 05,2024

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

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