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How to know if two arrays have the same values
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23 Answers
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Calculate distance between 2 GPS coordinates
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29 Answers
29
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Are list-comprehensions and functional functions faster than “for loops”?
...D_FAST 0 (.0)
>> 6 FOR_ITER 12 (to 21)
9 STORE_FAST 1 (x)
12 LOAD_FAST 1 (x)
15 LIST_APPEND 2
18 JUMP_ABSOLUTE 6
>> 21 RETURN_VALUE
Usi...
How to slice an array in Bash
...n section in the Bash man page. A[@] returns the contents of the array, :1:2 takes a slice of length 2, starting at index 1.
A=( foo bar "a b c" 42 )
B=("${A[@]:1:2}")
C=("${A[@]:1}") # slice to the end of the array
echo "${B[@]}" # bar a b c
echo "${B[1]}" # a b c
echo "${C...
Find indices of elements equal to zero in a NumPy array
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228
numpy.where() is my favorite.
>>> x = numpy.array([1,0,2,0,3,0,4,5,6,7,8])
>>&...
How do I convert an integer to binary in JavaScript?
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526
function dec2bin(dec){
return (dec >>> 0).toString(2);
}
dec2bin(1); // 1
dec2...
Generate all permutations of a list without adjacent equal elements
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12 Answers
12
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How to uninstall Python 2.7 on a Mac OS X 10.6.4?
I want to completely remove Python 2.7 from my Mac OS X 10.6.4. I managed to remove the entry from the PATH variable by reverting my .bash_profile . But I also want to remove all directories, files, symlinks, and entries that got installed by the Python 2.7 install package. I've got the install p...
What is the best way to convert an array to a hash in Ruby
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NOTE: For a concise and efficient solution, please see Marc-André Lafortune's answer below.
Th...
How can I pipe stderr, and not stdout?
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1227
First redirect stderr to stdout — the pipe; then redirect stdout to /dev/null (without chang...