大约有 15,000 项符合查询结果（耗时：0.0231秒） [XML]
PHP + MySQL transactions examples
...s";
$member_name = "EleventyOne";
$conn = new mysqli($db_host,$db_user,$db_passwd,$db_name); // error-check this
// note: this is meant for InnoDB tables. won't work with MyISAM tables.
try {
$conn->autocommit(FALSE); // i.e., start transaction
// assume that the TABLE groups has an a...
Unicode与UTF-8互转(C语言实现) - C/C++ - 清泛网 - 专注C/C++及内核技术
...体系, 可以表示最多256个符号.
但是, 这里又出现了新的问题. 不同的国家有不同的字母, 因此, 哪怕它们都使用256个
符号的编码方式, 代表的字母却不一样. 比如, 130在法语编码中代表了é, 在希伯来语
编码中却代表了字母G...
asynchronous vs non-blocking
...g whether given condition holds (socket is readable, device has more data, etc.)
share
|
improve this answer
|
follow
|
...
Is “IF” expensive?
...truction reordering, at the compiler level, and also to some extent on the CPU level (for an out-of-order CPU, of course). Nice detailed answer though.
– jalf
Nov 24 '08 at 20:58
5...
How can I build a small operating system on an old desktop computer? [closed]
...iles and devices, reading and writing, passing messages between processes, etc.
Read up on x86 assembly (assuming you are designing this for an x86 machine). That should answer a lot of your questions with regards to moving between processor operating modes.
If you've got any electronics knowledg...
How dangerous is it to access an array out of bounds?
...isk), possibly bringing down the entire system. A lot of malware (viruses, etc.) exploits buffer overruns to gain unauthorized access to the system.
(One historical example: I've heard that on some old systems with core memory, repeatedly accessing a single memory location in a tight loop could li...
How is the fork/join framework better than a thread pool?
...f thread pools and Fork/Join are alike: Both want to utilize the available CPU power the best they can for maximum throughput. Maximum throughput means that as many tasks as possible should be completed in a long period of time. What is needed to do that? (For the following we will assume that there...
Under what circumstances are linked lists useful?
...od solutions to the problems here reported (eg: SkipLists, Dynamic Arrays, etc...).
In this answer I've taken into account the basic data structure every programmer should know about.
share
|
improv...
AfxGetApp->GetMainWnd() 与 AfxGetMainWnd() - C/C++ - 清泛网 - 专注C/C++及内核技术
...Wnd()取得的是主窗口句柄,无论在那个线程里调用都是没有问题的,因为它先取得主线程句柄,再取得主线程的活动窗口(如视图切换可能导致的替代，这种情况我也不大清楚），如果没有活动窗口则取主窗口,任何程序总要有一个主...
八成企业活不过18个月 怎样避免“初创死”？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...很多创新企业提供指导。他和我聊天时，谈到创业周期的问题。他觉得创业都是一开始很顺利，然后3-4个月会出现瓶颈期，到1年左右，能够坚持下来的公司业务都慢慢稳固，进入快速发展阶段。
当然，这个时间表不是绝对的。...