大约有 44,000 项符合查询结果（耗时：0.0418秒） [XML]
How can I remove duplicate rows?
...erver LEFT JOIN is less efficient than NOT EXISTS sqlinthewild.co.za/index.php/2010/03/23/… The same site also compares NOT IN vs NOT EXISTS. sqlinthewild.co.za/index.php/2010/02/18/not-exists-vs-not-in Out of the 3 I think NOT EXISTS performs best. All three will generate a plan with a self join ...
MVC (Laravel) where to add logic
...er of Services in app folder, do you have to include it in bootstrap/start.php or anywhere for booting because i looked over your git couldnt find it? @RubensMariuzzo. Does it automatically become available thorughout the app ? so we can just use CongregationService::getCongregations(); ??
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内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...内存到CentralCache里。 解决了ptmalloc2中arena之间不能迁移的问题。
Tcmalloc占用更少的额外空间。例如，分配N个8字节对象可能要使用大约8N * 1.01字节的空间。即，多用百分之一的空间。Ptmalloc2使用最少8字节描述一个chunk。
更快。...
Explode string by one or more spaces or tabs
...
instead of using explode, try preg_split: http://www.php.net/manual/en/function.preg-split.php
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What does the 'b' character do in front of a string literal?
...x.
So yes, b'...' literals in Python have the same purpose that they do in PHP.
Also, just out of curiosity, are there
more symbols than the b and u that do
other things?
The r prefix creates a raw string (e.g., r'\t' is a backslash + t instead of a tab), and triple quotes '''...''' or """...""" a...
Resetting a setTimeout
...imer = window.setTimeout(function() {
window.location.href = 'file.php';
}, 115000);
}
function onClick() {
clearTimeout(g_timer);
startTimer();
}
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Cross-Domain Cookies
...T");
header("Access-Control-Allow-Headers: Content-Type, *");
Within the PHP-file you can use $_COOKIE[name]
Second, on the client side:
Within your ajax request you need to include 2 parameters
crossDomain: true
xhrFields: { withCredentials: true }
Example:
type: "get",
url: link,
crossDom...
那些微信公众大号是如何赚钱的？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...的经济效益。“你开公众号了吗？”不知从何时起，这个问题在我们日常中出现的频率越来越高。如今，微信公众号不仅是传递好文的平台，承载着万千运营者的兴趣和梦想，而且当粉丝量和文章阅读量高涨之后，随之而来的还...
Is there a MySQL command to convert a string to lowercase?
...case. Is there an easy command to do this, either using MySQL or MySQL and PHP?
9 Answers
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Resolve Git merge conflicts in favor of their changes during a pull
...'s, the easiest way is:
git checkout --theirs path/to/the/conflicted_file.php
git add path/to/the/conflicted_file.php
The converse of this (to overwrite the incoming version with your version) is
git checkout --ours path/to/the/conflicted_file.php
git add path/to/the/conflicted_file.php
Surpri...