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When you exit a C application, is the malloc-ed memory automatically freed?
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It depends on the operating system. The majority of modern (and all major) operating systems will free memory not freed by the program when it ends.
Relying on this is bad practice and it is better to free it explicitly. The...
Regex to check whether a string contains only numbers [duplicate]
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var reg = /^\d+$/;
should do it. The original matches anything that consists of exactly one digit.
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XmlSerializer: remove unnecessary xsi and xsd namespaces
Is there a way to configure the XmlSerializer so that it doesn't write default namespaces in the root element?
4 Answers
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When do items in HTML5 local storage expire?
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It's not possible to specify expiration. It's completely up to the user.
https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage
Of course, it's possible that something your application stores on the client may...
Failed to allocate memory: 8
...today, when I tried to run an app in NetBeans on a 2.3.3 Android platform, it shows me that:
20 Answers
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Move an array element from one array position to another
... like a version on npm, array-move is the closest to this answer, although it's not the same implementation. See its usage section for more details. The previous version of this answer (that modified Array.prototype.move) can be found on npm at array.prototype.move.
I had fairly good success with...
How to use git bisect?
I have read some articles saying that git bisect is awesome. However, I'm not a native speaker and I can't understand why it's awesome.
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Does a foreign key automatically create an index?
... a constraint, a relationship between two tables - that has nothing to do with an index per se.
But it is a known fact that it makes a lot of sense to index all the columns that are part of any foreign key relationship, because through a FK-relationship, you'll often need to lookup a relating table...
Remove secure warnings (_CRT_SECURE_NO_WARNINGS) from projects by default in Visual Studio
...gs that come up when using functions like scanf(). I found that you can do it by adding a line in the project option or a #define _CRT_SECURE_NO_WARNINGS in the beginning of the code.
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Why is === faster than == in PHP?
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Because the equality operator == coerces, or converts, the data type temporarily to see if it’s equal to the other operand, whereas === (the identity operator) doesn’t need to do any converting whatsoever and thus less work is done, whic...