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Anonymous recursive PHP functions
...rence
$factorial = function( $n ) use ( &$factorial ) {
if( $n == 1 ) return 1;
return $factorial( $n - 1 ) * $n;
};
print $factorial( 5 );
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Print a list in reverse order with range()?
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Replace all non-alphanumeric characters in a string
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186
Regex to the rescue!
import re
s = re.sub('[^0-9a-zA-Z]+', '*', s)
Example:
>>> ...
How to implement a property in an interface
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301
In the interface, you specify the property:
public interface IResourcePolicy
{
string Versio...
Javascript parseInt() with leading zeros
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184
This is because if a number starts with a '0', it's treated as base 8 (octal).
You can force ...
How can I obtain the element-wise logical NOT of a pandas Series?
...: s = pd.Series([True, True, False, True])
In [8]: ~s
Out[8]:
0 False
1 False
2 True
3 False
dtype: bool
Using Python2.7, NumPy 1.8.0, Pandas 0.13.1:
In [119]: s = pd.Series([True, True, False, True]*10000)
In [10]: %timeit np.invert(s)
10000 loops, best of 3: 91.8 µs per loop
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jQuery check if an input is type checkbox?
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answered Sep 28 '09 at 18:49
Ken BrowningKen Browning
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How to format numbers by prepending 0 to single-digit numbers?
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