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Regex to match a digit two or four times
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Python's “in” set operator
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answered Jan 2 '12 at 21:14
Ignacio Vazquez-AbramsIgnacio Vazquez-Abrams
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How to convert a boolean array to an int array
...t;>> x
array([ True, False, True], dtype=bool)
>>> x + [1, 2, 3]
array([2, 2, 4])
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How to copy directories in OS X 10.7.3?
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Convert numpy array to tuple
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>>> arr = numpy.array(((2,2),(2,-2)))
>>> tuple(map(tuple, arr))
((2, 2), (2, -2))
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How to write multiple line string using Bash with variables?
...the command used (echo) is wrong.
Correct would be:
#!/bin/bash
kernel="2.6.39"
distro="xyz"
cat >/etc/myconfig.conf <<EOL
line 1, ${kernel}
line 2,
line 3, ${distro}
line 4 line
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EOL
cat /etc/myconfig.conf
This construction is referred to as a Here Document and can be found in t...
In Intellij, how do I toggle between camel case and underscore spaced?
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edited Oct 27 '17 at 8:19
Meo
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Asterisk in function call
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182
* is the "splat" operator: It takes a list as input, and expands it into actual positional argum...
Boolean operators && and ||
...rter ones are vectorized, meaning they can return a vector, like this:
((-2:2) >= 0) & ((-2:2) <= 0)
# [1] FALSE FALSE TRUE FALSE FALSE
The longer form evaluates left to right examining only the first element of each vector, so the above gives
((-2:2) >= 0) && ((-2:2) <...
Python Dictionary to URL Parameters
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256
Use urllib.urlencode(). It takes a dictionary of key-value pairs, and converts it into a form ...