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Allowed characters in Linux environment variable names
... the value shall
be composed of characters from the
portable character set (except NUL
and as indicated below).
So names may contain any character except = and NUL, but:
Environment variable names used by the utilities in the Shell and
Utilities volume of IEEE Std
1003.1-2001 consist...
SQL中使用update inner join和delete inner join；Oracle delete join替代...
... join和delete inner join；Oracle delete join替代方案UpdateUpdate XXX set XXX where 这种写法大家肯定都知道，才发现update和delete居然支持inner join的update方式，这个在表间关联来...Update
Update XXX set XXX where 这种写法大家肯定都知道，才发现update...
PHP中的错误处理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...了。错误很常见，比如Notice，Warning等等。此时一般使用set_error_handler...程序只要在运行，就免不了会出现错误！或早或晚，只是时间问题罢了。
错误很常见，比如Notice，Warning等等。此时一般使用set_error_handler来处理：
<?php
...
PHP cURL vs file_get_contents
...mportant things do not matter.
fopen() with a stream context or cURL with setopt are powerdrills with every bit and option you can think of.
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Flags to enable thorough and verbose g++ warnings
Often in C under gcc , I will start with the following set of warning flags (painfully assembled from multiple sources):
5...
Show a PDF files in users browser via PHP/Perl
...y in the browser, rather than forcing a download. If that is the case, try setting the Content-Disposition header with a value of inline.
Also remember that this will also be affected by browser settings - some browsers may be configured to always download PDF files or open them in a different appl...
Android SDK installation doesn't find JDK
...
Doesn't work for me on Windows 7 x64. I'm not joking. I set JAVA_HOME and I tried clicking back and next several times, but it's still not working. Neither does running SDK Manager.exe from the archive and I am positive I have JDK 7 installed (even ran the installer again and it t...
Error: “Cannot modify the return value” c#
...not the value itself as you would with a reference type (class), so if you set the X property on it then you're setting the property on the copy and then discarding it, leaving the original value unchanged. This probably isn't what you intended, which is why the compiler is warning you about it.
If...
Record file copy operation with Git
...diff manpage.
You can also configure git to always do rename detection by setting diff.renames to a boolean true value (e.g. true or 1), and you can request git to do copy detection too by setting it to copy or copies. See the git-config manpage.
Check also the -l option to git diff and the relate...
How to count objects in PowerShell?
...ing for this… v3+ doesn't seem to work without the @ for count < 2 if Set-StrictMode -Version Latest is used. I just ran into this today (on 5.1) — something worked interactively that didn't work in a function. I tracked it down to the function have Set-StrictMode in it; when I set strict mod...