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What generates the “text file busy” message in Unix?
...table while it was running.
For example, I was building a make workalike called rmk, and after a while it was self-maintaining. I would run the development version and have it build a new version. To get it to work, it was necessary to use the workaround:
gcc -g -Wall -o rmk1 main.o -L. -lrmk -L...
Dynamically generating a QR code with PHP [closed]
I'm trying to generate QR codes on my website. All they have to do is have a URL in them, which a variable on my site will provide. What would be the easiest way to do this?
...
How can I catch a “catchable fatal error” on PHP type hinting?
...assA::method_a() must be an instance of ClassB, instance of ClassA given, called in [...]
catched: Argument 1 passed to ClassA::method_a() must be an instance of ClassB, instance of ClassWrong given, called in [...]
method_a: ClassB
method_a: ClassC
done.
Old answer for pre-php7 versions:
http:/...
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，...
php: determine where function was called from
is there a way to find out, where a function in PHP was called from?
example:
8 Answers
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Can't use method return value in write context
... functions.
However, the real problem you have is that you use empty() at all, mistakenly believing that "empty" value is any different from "false".
Empty is just an alias for !isset($thing) || !$thing. When the thing you're checking always exists (in PHP results of function calls always exist), ...
How do I see the extensions loaded by PHP?
...
Running php -m will give you all the modules, and php -i will give you a lot more detailed information on what the current configuration.
share
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improv...
PHP UML Generator [closed]
...XMI file
Can convert UML/XMI content from version 1.4 to version 2.1
Install it on the command line via:
$ pear install pear/php_uml
(This used to be $ pear install pear/php_uml-alpha but the package has since gone stable.)
Generate your xmi:
$ phpuml -o project.xmi
...
Is there a MySQL option/feature to track history of changes to records?
...ant to audit the changes to the data - who did what and when?", you can usually use audit tables (as per the trigger example Keethanjan posted). I'm not a huge fan of triggers, but it has the great benefit of being relatively painless to implement - your existing code doesn't need to know about the ...
糯米推全景地图 让竞争对手们如何接招？ - 资讯 - 清泛网 - 专注C/C++及内核技术
...尾巴，创业的热情还异常火爆。那时，我就思考这样一个问题：O2O，尤其是餐饮类O2O，可以凭借一时的补贴吸引顾客，但补贴之后呢？信任感才是最重要的。如何建立信任感，将是O2O未来面临的一大挑战。
2015年7月，正值厨师...