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What is the difference between ~> and >= when specifying rubygem in Gemfile?
I often see the following notation(~>) in Gemfile.
2 Answers
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How to get a DOM Element from a JQuery Selector
I'm having an impossibly hard time finding out to get the actual DOMElement from a jquery selector. Sample Code:
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How to check whether a string is Base64 encoded or not
I want to decode a Base64 encoded string, then store it in my database. If the input is not Base64 encoded, I need to throw an error.
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Dictionaries and default values
Assuming connectionDetails is a Python dictionary, what's the best, most elegant, most "pythonic" way of refactoring code like this?
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Why does i = i + i give me 0?
I have a simple program:
10 Answers
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Combining two Series into a DataFrame in pandas
I have two Series s1 and s2 with the same (non-consecutive) indices. How do I combine s1 and s2 to being two columns in a DataFrame and keep one of the indices as a third column?
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Make xargs handle filenames that contain spaces
My command fails because the file "Lemon Tree.mp3" contains spaces and so xargs thinks it's two files. Can I make find + xargs work with filenames like this?
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How to center align the cells of a UICollectionView?
I am currently using UICollectionView for the user interface grid, and it works fine. However, I'd like to be enable horizontal scrolling. The grid supports 8 items per page and when the total number of items are, say 4, this is how the items should be arranged with horizontal scroll direction ena...
Regular expression to match non-ASCII characters?
What is the easiest way to match non-ASCII characters in a regex? I would like to match all words individually in an input string, but the language may not be English, so I will need to match things like ü, ö, ß, and ñ. Also, this is in Javascript/jQuery, so any solution will need to apply to th...
An “and” operator for an “if” statement in Bash
I'm trying to create a simple Bash script to check if the website is down and for some reason the "and" operator doesn't work:
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