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Detecting touch screen devices with Javascript

In Javascript/jQuery, how can I detect if the client device has a mouse? 16 Answers ...
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How to generate a random alpha-numeric string?

I've been looking for a simple Java algorithm to generate a pseudo-random alpha-numeric string. In my situation it would be used as a unique session/key identifier that would "likely" be unique over 500K+ generation (my needs don't really require anything much more sophisticated). ...
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How to make Visual Studio copy a DLL file to the output directory?

I have a Visual Studio C++ project that relies on an external DLL file. How can I make Visual Studio copy this DLL file automatically into the output directory (debug/release) when I build the project? ...
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Use of Java's Collections.singletonList()?

What is the use of Collections.singletonList() in Java? I understand that it returns a list with one element. Why would I want to have a separate method to do that? How does immutability play a role here? ...
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How can I disable ARC for a single file in a project?

I am using ARC successfully in my project. However, I have encountered a few files (e.g., in unit tests and mock objects) where the rules of ARC are a little more fragile right now. I recall hearing that there was a way to disable ARC on a per-file basis, though I have been unable to find this optio...
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How do I programmatically determine if there are uncommitted changes?

In a Makefile, I'd like to perform certain actions if there are uncommitted changes (either in the working tree or the index). What's the cleanest and most efficient way to do that? A command that exits with a return value of zero in one case and non-zero in the other would suit my purposes. ...
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Jackson: how to prevent field serialization

I have an entity class with a password field: 9 Answers 9 ...
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Writing a Python list of lists to a csv file

I have a long list of lists of the following form --- 10 Answers 10 ...
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How to get the current loop index when using Iterator?

I am using an Iterator to iterate through a collection and I want to get the current element's index. 12 Answers ...
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How can I replace a newline (\n) using sed?

How can I replace a newline (" \n ") with a space (" ") using the sed command? 42 Answers ...