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Efficient way to apply multiple filters to pandas DataFrame or Series
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Pandas (and numpy) allow for boolean indexing, which will be much more efficient:
In [11]: df.l...
Javascript : natural sort of alphanumerical strings
...d in Chrome, Firefox, and IE11.
Here's an example. It returns 1, meaning 10 goes after 2:
'10'.localeCompare('2', undefined, {numeric: true, sensitivity: 'base'})
For performance when sorting large numbers of strings, the article says:
When comparing large numbers of strings, such as in sor...
Command-line Tool to find Java Heap Size and Memory Used (Linux)?
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edited Feb 1 '17 at 20:03
cybersoft
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answered Oct 9 '12 at...
How to deny access to a file in .htaccess
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answered Jul 30 '12 at 21:18
Jon LinJon Lin
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Version vs build in Xcode
...d deployment target. The version field is blank and the build field is 3.4.0 (which matches the version of the app from when I was still editing with Xcode 3).
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What is the difference between trie and radix trie data structures?
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edited Nov 15 '15 at 10:29
Peter Mortensen
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How to generate a random int in C?
...lled once.
int r = rand(); // Returns a pseudo-random integer between 0 and RAND_MAX.
Edit: On Linux, you might prefer to use random and srandom.
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Get __name__ of calling function's module in Python
...ef info(msg):
frm = inspect.stack()[1]
mod = inspect.getmodule(frm[0])
print '[%s] %s' % (mod.__name__, msg)
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Literal suffix for byte in .NET?
... of a literal suffix on the MSDN reference for Byte as well as in the C# 4.0 Language Specification. The only literal suffixes in C# are for integer and real numbers as follows:
u = uint
l = long
ul = ulong
f = float
m = decimal
d = double
If you want to use var, you can always cast the byte as i...
How to pass an ArrayList to a varargs method parameter?
...toArray(new WorldLocation[locations.size()]))
(toArray(new WorldLocation[0]) also works, but you would allocate a zero length array for no reason.)
Here's a complete example:
public static void method(String... strs) {
for (String s : strs)
System.out.println(s);
}
...
List<...