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Fast permutation -> number -> permutation mapping algorithms
I have n elements. For the sake of an example, let's say, 7 elements, 1234567. I know there are 7! = 5040 permutations possible of these 7 elements.
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How to move screen without moving cursor in Vim?
I recently discovered Ctrl + E and Ctrl + Y shortcuts for Vim that respectively move the screen up and down with a one line step, without moving the cursor .
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How to make a class JSON serializable
How to make a Python class serializable?
33 Answers
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Mounting multiple volumes on a docker container?
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PHP regular expressions: No ending delimiter '^' found in
I've been having some trouble with regular expressions.
3 Answers
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When should I use cross apply over inner join?
What is the main purpose of using CROSS APPLY ?
13 Answers
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Timeout jQuery effects
I am trying to have an element fade in, then in 5000 ms fade back out again. I know I can do something like:
7 Answers
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How to paste in a new line with vim?
I often have to paste some stuff on a new line in vim. What I usually do is:
14 Answers
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Printing Java Collections Nicely (toString Doesn't Return Pretty Output)
I wish to print a Stack<Integer> object as nicely as the Eclipse debugger does (i.e. [1,2,3...] ) but printing it with out = "output:" + stack doesn't return this nice result.
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“TypeError: (Integer) is not JSON serializable” when serializing JSON in Python?
I am trying to send a simple dictionary to a json file from python, but I keep getting the "TypeError: 1425 is not JSON serializable" message.
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