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How to check if string input is a number? [duplicate]
How do I check if a user's string input is a number (e.g. -1 , 0 , 1 , etc.)?
24 Answers
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What is the JavaScript convention for no operation?
What is the JavaScript convention for no operation? Like a Python pass command.
6 Answers
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How can I delete a file from a Git repository?
I have added a file named "file1.txt" to a Git repository. After that, I committed it, added a couple of directories called dir1 and dir2 , and committed them to the Git repository.
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HTTP response code for POST when resource already exists
I'm building a server that allows clients to store objects. Those objects are fully constructed at client side, complete with object IDs that are permanent for the whole lifetime of the object.
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Are negative array indexes allowed in C?
I was just reading some code and found that the person was using arr[-2] to access the 2nd element before the arr , like so:
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Function overloading by return type?
Why don't more mainstream statically typed languages support function/method overloading by return type? I can't think of any that do. It seems no less useful or reasonable than supporting overload by parameter type. How come it's so much less popular?
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psycopg2: insert multiple rows with one query
I need to insert multiple rows with one query (number of rows is not constant), so I need to execute query like this one:
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How to unset a JavaScript variable?
I have a global variable in JavaScript (actually a window property, but I don't think it matters) which was already populated by a previous script but I don't want another script that will run later to see its value or that it was even defined.
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How do you get a string from a MemoryStream?
If I am given a MemoryStream that I know has been populated with a String , how do I get a String back out?
11 Answers...
Move the mouse pointer to a specific position?
I'm building a HTML5 game and I am trying to put the mouse cursor over a certain control on a specific event so that moving in a specific direction always has the same result. Is this possible?
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