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What is offsetHeight, clientHeight, scrollHeight?
...f explaining what is the difference between offsetHeight , clientHeight and scrollHeight or offsetWidth , clientWidth and scrollWidth ?
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if A vs if A is not None:
...if A:
will call A.__nonzero__() (see Special method names documentation) and use the return value of that function. Here's the summary:
object.__nonzero__(self)
Called to implement truth value testing and the built-in operation bool(); should return False or True, or their integer equival...
What reason is there to use null instead of undefined in JavaScript?
I've been writing JavaScript for quite a long time now, and I have never had a reason to use null . It seems that undefined is always preferable and serves the same purpose programmatically. What are some practical reasons to use null instead of undefined ?
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Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...我使用了以下代码来实现：
if not DokanFileInfo.IsDirectory and (CreationDisposition in [CREATE_NEW, OPEN_ALWAYS, CREATE_ALWAYS]) then begin
MySetFileDate(DokanFileInfo, DateTimeToFileDate(Now)); //Cleanup里会判断FileDate来决定是否保存到远程目录
end;
5.WriteFile: ...
Pickle or json?
...ed to save to disk a little dict object whose keys are of the type str and values are int s and then recover it . Something like this:
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Why is unsigned integer overflow defined behavior but signed integer overflow isn't?
Unsigned integer overflow is well defined by both the C and C++ standards. For example, the C99 standard ( §6.2.5/9 ) states
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Testing whether a value is odd or even
I decided to create simple isEven and isOdd function with a very simple algorithm:
22 Answers
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jQuery set checkbox checked
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Taking all of the proposed answers and applying them to my situation - trying to check or uncheck a checkbox based on a retrieved value of true (should check the box) or false (should not check the box) - I tried all of the above and found that using .prop("ch...
What is the difference between graph search and tree search?
What is the difference between graph search and tree search versions regarding DFS, A* searches in artificial intelligence ?
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PostgreSQL naming conventions
...sitively when not quoted (it actually folds them to lowercase internally), and case sensitively when quoted; many people are not aware of this idiosyncrasy. Using always lowercase you are safe. Anyway, it's acceptable to use camelCase or PascalCase (or UPPER_CASE), as long as you are consistent: eit...