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Swift - Convert to absolute value
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Tamás Sengel
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answered Jun 11 '14 at 9:48
B.S.B.S.
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ruby system command check exit code
...tevm --invalid-option")
$? #=> #<Process::Status: pid 9926 exit 2>
$?.exitstatus #=> 2
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How can I make pandas dataframe column headers all lowercase?
...e(3,0,-1), 'C':list('abc')})
>>> data
A B C
0 0 3 a
1 1 2 b
2 2 1 c
>>> data.columns = map(str.lower, data.columns)
>>> data
a b c
0 0 3 a
1 1 2 b
2 2 1 c
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How do I script a “yes” response for installing programs?
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213
The 'yes' command will echo 'y' (or whatever you ask it to) indefinitely. Use it as:
yes | c...
How to get correct timestamp in C#
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edited Sep 26 '14 at 7:05
answered Jan 19 '14 at 17:05
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Get the first N elements of an array?
...ve_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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inserting characters at the start and end of a string
...you can also create a string with n Ls by using multiplication:
m = 1
n = 2
yourstring = ("L" * m) + yourstring + ("L" * n)
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Argmax of numpy array returning non-flat indices
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162
You could use numpy.unravel_index() on the result of numpy.argmax():
>>> a = numpy.ran...
What's the meaning of Base SDK, iOS deployment target, Target, and Project in xcode
...cept that base sdk >= deployment target.
You specify build settings on 2 levels as each project can have multiple targets and you might not want the same settings for all targets. The project-level settings override the default settings and the target-level settings override the project-level s...
Find value in an array
... array, and if that's the case, you can use Array#include?(value):
a = [1,2,3,4,5]
a.include?(3) # => true
a.include?(9) # => false
If you mean something else, check the Ruby Array API
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