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Live character count for EditText

I was wondering what the best way to do a live character count of an edit-text box is in Android. I was looking at this but I couldn't seem to make any sense of it. ...
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“rm -rf” equivalent for Windows?

I need a way to recursively delete a folder and its children. 21 Answers 21 ...
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How do I check if a string is a number (float)?

What is the best possible way to check if a string can be represented as a number in Python? 33 Answers ...
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Is there a difference between /\s/g and /\s+/g?

When we have a string that contains space characters: 4 Answers 4 ...
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What is :: (double colon) in Python when subscripting sequences?

I know that I can use something like string[3:4] to get a substring in Python, but what does the 3 mean in somesequence[::3] ? ...
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How to check if running in Cygwin, Mac or Linux?

I have a shell script that is used both on Windows/Cygwin and Mac and Linux. It needs slightly different variables for each versions. ...
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Display two files side by side

How can 2 unsorted text files of different lengths be display side by side (in columns) in a shell 9 Answers ...
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How to check whether a string is a valid HTTP URL?

There are the Uri.IsWellFormedUriString and Uri.TryCreate methods, but they seem to return true for file paths etc. 9...
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How to output only captured groups with sed?

Is there any way to tell sed to output only captured groups? For example given the input: 8 Answers ...
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What's the most efficient way to erase duplicates and sort a vector?

I need to take a C++ vector with potentially a lot of elements, erase duplicates, and sort it. 23 Answers ...