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Python argparse ignore unrecognised arguments
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unutbuunutbu
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How to initialize a dict with keys from a list and empty value in Python?
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405
dict.fromkeys([1, 2, 3, 4])
This is actually a classmethod, so it works for dict-subclasses (...
How to set enum to null
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edited Mar 11 '15 at 14:45
MikeTheLiar
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answe...
Hide hidden(dot) files in github atom editor
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answered Mar 29 '14 at 22:47
ccheneyccheney
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How to convert a data frame column to numeric type?
... a 1
2 b 2 2 b 2
3 c 3 3 c 3
4 d 4 4 d 4
5 e 5 5 e 5
and let us run:
> sapply(d, mode)
char fake_char fac char_fac num
"character" "character" "numeric" "numeric" "numer...
$watch'ing for data changes in an Angular directive
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edited Apr 24 '15 at 10:39
answered Dec 20 '12 at 21:47
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ruby convert array into function arguments
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104
You can turn an Array into an argument list with the * (or "splat") operator:
a = [0, 1, 2, 3, ...
Get the first N elements of an array?
... array indices. You need the preserve_keys flag set to trueto avoid this. (4th parameter, available since 5.0.2).
Example:
$output = array_slice($input, 2, 3, true);
Output:
array([3]=>'c', [4]=>'d', [5]=>'e');
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Difference between Destroy and Delete
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294
Basically destroy runs any callbacks on the model while delete doesn't.
From the Rails API:
A...