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Operation on every pair of element in a list
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233
Check out product() in the itertools module. It does exactly what you describe.
import iterto...
Is it worth using Python's re.compile?
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TriptychTriptych
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How can I check which version of Angular I'm using?
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Kabb5
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answered Apr 15 '13 at 14:35
TheHippoTheHippo...
Postgres NOT in array
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137
SELECT COUNT(*) FROM "messages" WHERE NOT (3 = ANY (recipient_ids))
You can always negate WHE...
Is there a ceiling equivalent of // operator in Python?
I found out about the // operator in Python which in Python 3 does division with floor.
7 Answers
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How to use php serialize() and unserialize()
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A PHP array or object or other complex data structure cannot be transported or stored or otherwi...
How to return a part of an array in Ruby?
...#=> nil
a[1, 2] #=> [ "b", "c" ]
a[1..3] #=> [ "b", "c", "d" ]
a[4..7] #=> [ "e" ]
a[6..10] #=> nil
a[-3, 3] #=> [ "c", "d", "e" ]
# special cases
a[5] ...
What is the difference between '/' and '//' when used for division?
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13 Answers
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Validating IPv4 addresses with regexp
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36 Answers
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Find element's index in pandas Series
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>>> myseries[myseries == 7]
3 7
dtype: int64
>>> myseries[myseries == 7].index[0]
3
Though I admit that there should be a better way to do that, but this at least avoids iterating and looping through the object and moves it to the C level....