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How to extract text from a string using sed?
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Small Haskell program compiled with GHC into huge binary
Even trivially small Haskell programs turn into gigantic executables.
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How to reorder data.table columns (without copying)
I'd like to reorder columns in my data.table x , given a character vector of column names, neworder :
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How do I find out if first character of a string is a number?
In Java is there a way to find out if first character of a string is a number?
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Count occurrences of a char in plain text file
Is there any way under linux/terminal to count, how many times the char f occurs in a plain text file?
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What does the constant 0.0039215689 represent?
I keep seeing this constant pop up in various graphics header files
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What is the >>>= operator in C?
Given by a colleague as a puzzle, I cannot figure out how this C program actually compiles and runs. What is this >>>= operator and the strange 1P1 literal? I have tested in Clang and GCC. There are no warnings and the output is "???"
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How to change border color of textarea on :focus
Forgive me is this is a stupid question, but i need help.
I want to change border color of TEXTAREA on focus. but my code doesn't seem to working properly.
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How to put individual tags for a scatter plot
I am trying to do a scatter plot in matplotlib and I couldn't find a way to add tags to the points. For example:
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How can I map True/False to 1/0 in a Pandas DataFrame?
I have a column in python pandas DataFrame that has boolean True/False values, but for further calculations I need 1/0 representation. Is there a quick pandas/numpy way to do that?
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