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How do you test to see if a double is equal to NaN?

I have a double in Java and I want to check if it is NaN . What is the best way to do this? 7 Answers ...
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How to write trycatch in R

I want to write trycatch code to deal with error in downloading from the web. 5 Answers ...
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How to remove leading zeros from alphanumeric text?

I've seen questions on how to prefix zeros here in SO. But not the other way! 19 Answers ...
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Highlight bash/shell code in markdown

How to highlight the bash/shell commands in markdown files? 7 Answers 7 ...
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doesn't inherit the font from

I have input and label fields: 4 Answers 4 ...
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Does Python support short-circuiting?

Does Python support short-circuiting in boolean expressions? 3 Answers 3 ...
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Why does the 260 character path length limit exist in Windows?

I have come up against this problem a few times at inopportune moments: 11 Answers 11 ...
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How do you run a crontab in Cygwin on Windows?

Some cygwin commands are .exe files, so you can run them with the standard Windows Scheduler, but others don't have an .exe extension so can't be run from DOS (it seems like). ...
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How can I apply a function to every row/column of a matrix in MATLAB?

You can apply a function to every item in a vector by saying, for example, v + 1 , or you can use the function arrayfun . How can I do it for every row/column of a matrix without using a for loop? ...
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How to convert int to char with leading zeros?

I need to convert int datafield to nvarchar with leading zeros 17 Answers 17 ...