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How to calculate time elapsed in bash script?
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edited Dec 12 '15 at 1:12
answered Jan 17 '12 at 23:44
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Modular multiplicative inverse function in Python
...e inverse of a number, i.e. a number y = invmod(x, p) such that x*y == 1 (mod p) ? Google doesn't seem to give any good hints on this.
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How can I autoplay a video using the new embed code style for Youtube?
...deo using the new embed code style for Youtube . I tried adding &autoplay=1 to the url, which worked with the old style, but it didn't work. For example, http://www.youtube.com/embed/JW5meKfy3fY is the embed link, but http://www.youtube.com/embed/JW5meKfy3fY&autoplay=1 doesn't work. Can any...
Numpy argsort - what is it doing?
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146
According to the documentation
Returns the indices that would sort an array.
2 is the i...
How do I pick randomly from an array?
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1140
Just use Array#sample:
[:foo, :bar].sample # => :foo, or :bar :-)
It is available in Ru...
What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
...ic sort compares the numbers as floats, this allows scientific notation eg 1.234E10 but is slower and subject to rounding error (1.2345678 could come after 1.2345679), numeric sort is just a regular alphabetic sort that knows 10 comes after 9.
See http://www.gnu.org/software/coreutils/manual/h...
jQuery select by attribute using AND and OR operators
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AND operation
a=$('[myc="blue"][myid="1"][myid="3"]');
OR operation, use commas
a=$('[myc=...
How to get whole and decimal part of a number?
Given, say, 1.25 - how do I get "1" and ."25" parts of this number?
16 Answers
16
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Extract first item of each sublist
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201
Using list comprehension:
>>> lst = [['a','b','c'], [1,2,3], ['x','y','z']]
>>&g...