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How can I remove a key and its value from an associative array?
... loops depending on your array:
$arr[$key1][$key2][$key3]=$value1; // ....etc
foreach ($arr as $key1 => $values) {
foreach ($key1 as $key2 => $value) {
unset($arr[$key1][$key2]);
}
}
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再说WCF Data Contract KnownTypeAttribute - 更多技术 - 清泛网移动版 - 专注C/C++及内核技术
...列化器去寻找未知对象的映射的途径。在Remoting中这样的问题不会存在，因为Remoting实际上是通过将一个类型传递给双方来进行类型匹配的。
那么KnowTypeAttribute到底用在什么地方呢？上边说了，当前类的未知类型。那什么又是当...
Deny access to one specific folder in .htaccess
...l won't give 404 but 403. You can still access file/folders using PHP/Perl etc but not using a web request. You can open a new question if that didn't answer your query.
– anubhava
Dec 11 '15 at 22:11
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ros 基本调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...系统得到默认的调试输出很容易，但是这些输出对于定位问题尤其是bugs没有太大作用。
本文旨在告诉读者如何生成有用的调试信息，通过这些信息可以直接判断出操作系统的运行状态。
几种调试方法
调试ros的方法有很多，...
ERROR 2006 (HY000): MySQL server has gone away
...ted at: "C:\ProgramData\MySQL\MySQL Server
5.6"
On Linux (Ubuntu): /etc/mysql
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What is JSONP, and why was it created?
...e codes back. As a result, you end up using timers to monitor the request, etc, which is always a bit suspect. The proposition for JSONRequest is a great solution to allowing cross domain scripting, maintaining security, and allowing proper control of the request.
These days (2015), CORS is the rec...
Force LF eol in git repo and working copy
...s actually a VirtualBox sharing the Windows directory; and while Notepad++ etc. can handle LF-only on Windows, vi is less happy with CRLF. Do I just want to change it so that core.autocrlf is false (or input)?
– Chowlett
Apr 3 '12 at 7:52
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C语言结构体里的成员数组和指针 - C/C++ - 清泛网 - 专注C/C++及内核技术
...问0x4的内存地址，不crash才怪。于是，你一定会有如下的问题：
1）为什么不是 13行if语句出错？f.a被初始化为空了嘛，用空指针访问成员变量为什么不crash？
2）为什么会访问到了0x4的地址？靠，4是怎么出来的？
3）代码中的...
Why is Magento so slow? [closed]
...ehind the scenes (application configuration, system config, layout config, etc.) that involve building up giant XML trees in memory and then "querying" those same trees for information. This takes both memory (storing the trees) and CPU (parsing the trees). Some of these (especially the layout tre...
What's the best way of scraping data from a website? [closed]
...settle for "not too bad". I agree, it's doable in PHP (and FORTRAN, C, VB, etc.) but unless your problem is really really simple then it would be a much better idea to use the right tools for the job. And again, unless you have an incredibly simple problem to solve ... what does it matter that reg...