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List of Big-O for PHP functions
...omplete.
Note: All the Big-O where calculated assuming a hash lookup is O(1) even though it's really O(n). The coefficient of the n is so low, the ram overhead of storing a large enough array would hurt you before the characteristics of lookup Big-O would start taking effect. For example the differ...
How to subtract 30 days from the current datetime in mysql?
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313
SELECT * FROM table
WHERE exec_datetime BETWEEN DATE_SUB(NOW(), INTERVAL 30 DAY) AND NOW();
h...
Get battery level and state in Android
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10 Answers
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How to raise a ValueError?
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178
raise ValueError('could not find %c in %s' % (ch,str))
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How to split last commit into two in Git
...g again
I modified it in my last commit so that now it looks like this:
1
something
something else
something again
2
Now I decide that I want to split it into two, and I want the insertion of the
first line to be in the first commit, and the insertion of the last line to be
in the second commit...
jQuery.inArray(), how to use it right?
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751
inArray returns the index of the element in the array, not a boolean indicating if the item exis...
Deleting all pending tasks in celery / rabbitmq
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edited Jan 27 '17 at 15:20
Dag Høidahl
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Fastest way to determine if record exists
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11 Answers
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Named colors in matplotlib
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317
I constantly forget the names of the colors I want to use and keep coming back to this question...
Is it possible to GROUP BY multiple columns using MySQL?
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GROUP BY col1, col2, col3
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