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When is std::weak_ptr useful?
I started studying smart pointers of C++11 and I don't see any useful use of std::weak_ptr . Can someone tell me when std::weak_ptr is useful/necessary?
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Remove non-numeric characters (except periods and commas) from a string
If I have the following values:
5 Answers
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Why doesn't django's model.save() call full_clean()?
I'm just curious if anyone knows if there's good reason why django's orm doesn't call 'full_clean' on a model unless it is being saved as part of a model form.
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Inline code highlighting in reStructuredText
I know reStructuredText has this directive:
1 Answer
1
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What is the difference between JOIN and UNION?
What is the difference between JOIN and UNION ? Can I have an example?
15 Answers
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What's a quick way to test to see a file exists?
I want to quickly check to see if a file exists in my iPhone app's Documents directory (or any path for that matter). I can enumerate through the directory's files, or I can try to open a specific file. What's the fastest way? I just need to know if the file is there or if it does not exist.
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How to get the contents of a webpage in a shell variable?
In Linux how can I fetch an URL and get its contents in a variable in shell script?
6 Answers
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How to add extra namespaces to Razor pages instead of @using declaration?
Is there some sort of magic I need to use to get the namespaces in the pages/namespaces element in the webconfig?
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Understanding offsetWidth, clientWidth, scrollWidth and -Height, respectively
There are several questions on StackOverflow regarding offsetWidth / clientWidth / scrollWidth (and -Height , respectively), but none give comprehensive explanation of what those values are.
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Difference between getAttribute() and getParameter()
What is the difference between getAttribute() and getParameter() methods within HttpServletRequest class?
10 Answers
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