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How do I trim leading/trailing whitespace in a standard way?

Is there a clean, preferably standard method of trimming leading and trailing whitespace from a string in C? I'd roll my own, but I would think this is a common problem with an equally common solution. ...
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Named regular expression group “(?Pregexp)”: what does “P” stand for?

In Python, the (?P<group_name>…) syntax allows one to refer to the matched string through its name: 3 Answers ...
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Shorter syntax for casting from a List to a List?

I know its possible to cast a list of items from one type to another (given that your object has a public static explicit operator method to do the casting) one at a time as follows: ...
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Get size of an Iterable in Java

I need to figure out the number of elements in an Iterable in Java. I know I can do this: 10 Answers ...
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Find running median from a stream of integers

Solution I have read: We can use a max heap on left side to represent elements that are less than the effective median, and a min heap on right side to represent elements that are greater than the effective median. ...
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Google Authenticator implementation in Python

I am trying to use one-time passwords that can be generated using Google Authenticator application . 2 Answers ...
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Detecting a mobile browser

I'm looking for a function which return boolean value if user has mobile browser or not. 36 Answers ...
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What's the difference between “mod” and “remainder”?

My friend said that there are differences between "mod" and "remainder". 5 Answers 5 ...
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NameValueCollection vs Dictionary [duplicate]

Any reason I should use Dictionary instead of NameValueCollection? 3 Answers 3 ...
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Build the full path filename in Python

I need to pass a file path name to a module. How do I build the file path from a directory name, base filename, and a file format string? ...