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What does @synchronized() do as a singleton method in objective C?
...dit: Adding some more information that wasn't in the original answer from 2011.
The @synchronized directive prevents multiple threads from entering any region of code that is protected by a @synchronized directive referring to the same object. The object passed to the @synchronized directive is the...
req.query and req.param in ExpressJS
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req.query will return a JS object after the query string is parsed.
/user?name=tom&age=55 -...
Change text color based on brightness of the covered background area?
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+50
Interesting resources for this:
W3C - Ensure that foreground and background color combinations provide sufficient contrast
Calculati...
E731 do not assign a lambda expression, use a def
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edited Mar 4 at 17:50
answered Jul 29 '14 at 7:31
Gar...
How can I use if/else in a dictionary comprehension?
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edited Mar 22 at 16:40
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
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How do I fix a merge conflict due to removal of a file in a branch?
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edited Mar 6 '14 at 20:23
answered Sep 4 '09 at 18:23
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How do I provide custom cast support for my class?
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answered Sep 10 '09 at 21:12
Charles BretanaCharles Bretana
127k2222 gold badges136136 silver badges206206 bronze badges
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Class type check in TypeScript
...t be used there anymore:
The is operator, which is new for ActionScript 3.0, allows you to test whether a variable or expression is a member of a given data type. In previous versions of ActionScript, the instanceof operator provided this functionality, but in ActionScript 3.0 the instanceof operat...
Create Django model or update if exists
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bakkalbakkal
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add a c...
NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...工作依靠21号中断(int 21h)来完成，并且BIOS服务中断用int 10h和int 16h，在linux中，所有的函数通过linux系统调用最终被内核处理，并且通过int 80h陷入内核代替用户空间执行，这称为linux的软中断(关于软中断，这里不细讲，我以后会...