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How to remove unwanted space between rows and columns in table?

How do I remove the extra space between the rows and columns in the table. 14 Answers ...
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Number of lines in a file in Java

I use huge data files, sometimes I only need to know the number of lines in these files, usually I open them up and read them line by line until I reach the end of the file ...
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Keep only first n characters in a string?

Is there a way in JavaScript to remove the end of a string? 7 Answers 7 ...
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Does opacity:0 have exactly the same effect as visibility:hidden

If so, does it effectively deprecate the visibility property? 9 Answers 9 ...
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Checking images for similarity with OpenCV

Does OpenCV support the comparison of two images, returning some value (maybe a percentage) that indicates how similar these images are? E.g. 100% would be returned if the same image was passed twice, 0% would be returned if the images were totally different. ...
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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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[] and {} vs list() and dict(), which is better?

I understand that they are both essentially the same thing, but in terms of style, which is the better (more Pythonic) one to use to create an empty list or dict? ...
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How to make rounded percentages add up to 100%

Consider the four percentages below, represented as float numbers: 17 Answers 17 ...
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Catching error codes in a shell pipe

I currently have a script that does something like 4 Answers 4 ...
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Too many 'if' statements?

The following code does work how I need it to, but it's ugly, excessive or a number of other things. I've looked at formulas and attempted to write a few solutions, but I end up with a similar amount of statements. ...