大约有 3,000 项符合查询结果(耗时:0.0128秒) [XML]

https://stackoverflow.com/ques... 

What is the advantage of GCC's __builtin_expect in if else statements?

...ase precedes the foo case (as opposed to the C code). This can utilise the CPU pipeline better, since a jump thrashes the already fetched instructions. Before the jump is executed, the instructions below it (the bar case) are pushed to the pipeline. Since the foo case is unlikely, jumping too is un...
https://stackoverflow.com/ques... 

“register” keyword in C?

... It tells the compiler to try to use a CPU register, instead of RAM, to store the variable. Registers are in the CPU and much faster to access than RAM. But it's only a suggestion to the compiler, and it may not follow through. ...
https://stackoverflow.com/ques... 

Select random lines from a file

...0 --file lines_78000000000.txt > /dev/null 0.02s user 0.01s system 80% cpu 0.047 total The reason it is so fast, well I don't read the whole file and just move the file pointer 10 times and print the line after the pointer. Gitlab Repo Old attempt First I needed a file of 78.000.000.000 lines:...
https://www.tsingfun.com/ilife/tech/1244.html 

那些年 O2O创业我踩了十个坑 - 资讯 - 清泛网 - 专注C/C++及内核技术

...此一来,公司团队看似整齐而豪华,但内部却出现了很多问题,由于大家背景各异,来自于国企、外企和民企,处事风格完全迥异,很多事情在讨论中反复,反复后再讨论,浪费了大量的时间在开会和制定战略中,而且大家的价...
https://stackoverflow.com/ques... 

How to detect idle time in JavaScript elegantly?

...ls the function, rather than letting it sit idle by. It doesn't catch zero CPU usage directly, but that is impossible, because executing a function causes CPU usage. And user inactivity eventually leads to zero CPU usage, so indirectly it does catch zero CPU usage. ...
https://www.tsingfun.com/it/cpp/1279.html 

了解 Boost Filesystem Library - C/C++ - 清泛网 - 专注C/C++及内核技术

...于处理文件系统操作的库,这一直是 C++ 语言存在的一个问题。过去,程序员必须使用本机 API 来解决此问题。通过本文您将了解一个提供安全、可移植且易用的 C++ 接口来促进文件系统操作的库:Boost Filesystem Library。 创建与...
https://www.tsingfun.com/ilife/relax/1008.html 

据说这是一个程序员的手机......... - 轻松一刻 - 清泛网 - 专注C/C++及内核技术

...坏在半路上了。于是两位工程师和一位经理就如何修车的问题展开了讨论。硬件工程师说:“我可以用随身携带的瑞士军刀把车坏的部分拆下来,找出原因,排除故障。”项目经理说:“根据经营管理学,应该召开会议,根据问...
https://www.tsingfun.com/it/cpp/2171.html 

VS Debug调试模式下内存泄露检测原理 - C/C++ - 清泛网 - 专注C/C++及内核技术

...前已经释放过了,或者根本就没分配过,可能存在潜在的问题)。程序退出的时候,如果链表还有数据,说明存在内存泄露,输出链表中的数据。 MS CRT已支持内存泄露的检测,使用MFC向导生成的工程,在DEBUG模式下,默认会...
https://www.tsingfun.com/it/cpp/2264.html 

解决:vs2010调试程序时出现: “当前不会命中断点。源代码与原始版本不同...

... 二、新建解决方案,新建测试项目均不会出现此问题。则问题应该出现在出问题的解决方案设置或项目设置上,怀疑调试时候,修改的程序集没有重新编译。, 查看程序的“配置管理器”,将 “生成” 勾选,再试,问...
https://www.tsingfun.com/ilife/life/248.html 

如何跟程序员谈一场没有Bug的恋爱 - 杂谈 - 清泛网 - 专注C/C++及内核技术

...,原因无他:呆萌又多金。但如何和程序员相处一直是个问题,这篇文章就教你如何优(xin)雅(j 现在越来越多的妹子把恋爱目标锁定在程序员上,原因无他:呆萌又多金。但如何和程序员相处一直是个问题,这篇文章就教...