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What is the exact meaning of IFS=$'\n'?
If the following example, which sets the IFS environment variable to a line feed character...
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counting number of directories in a specific directory
How to count the number of folders in a specific directory. I am using the following command, but it always provides an extra one.
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How to fully remove Xcode 4
I want to remove all existing SDK versions as well as Xcode 4.
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How to do 3 table JOIN in UPDATE query?
I asked a question and got this reply which helped.
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How can I plot separate Pandas DataFrames as subplots?
I have a few Pandas DataFrames sharing the same value scale, but having different columns and indices. When invoking df.plot() , I get separate plot images. what I really want is to have them all in the same plot as subplots, but I'm unfortunately failing to come up with a solution to how and would...
Extracting bits with a single multiplication
I saw an interesting technique used in an answer to another question , and would like to understand it a little better.
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NSUserDefaults not cleared after app uninstall on simulator
this may sound real NOOB! I want to check if it's the second time the user enters my application, so to keep the run count I'm using NSUserDefaults . I have implemented the following code in my rootViewController 's viewDidLoad method:
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SSH Private Key Permissions using Git GUI or ssh-keygen are too open
Recently I've been unable to clone or push to github, and I'm trying to find the root cause.
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Append a NumPy array to a NumPy array
I have a numpy_array. Something like [ a b c ] .
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How do I find a “gap” in running counter with SQL?
I'd like to find the first "gap" in a counter column in an SQL table. For example, if there are values 1,2,4 and 5 I'd like to find out 3.
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