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Logical operators for boolean indexing in Pandas
... expectations, the designers of NumPy and Pandas refuse to guess, and instead raise a ValueError.
Instead, you must be explicit, by calling the empty(), all() or any() method to indicate which behavior you desire.
In this case, however, it looks like you do not want boolean evaluation, you want el...
Encrypt and decrypt a string in C#?
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EDIT 2013-Oct: Although I've edited this answer over time to address shortcomings, please see jbtule's answer for a more robust, informed solution.
https://stackoverflow.com/a/10366194/188474
Original Answer:
Here's a working example derived from the "RijndaelManaged Class" document...
mmap() vs. reading blocks
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I was trying to find the final word on mmap / read performance on Linux and I came across a nice post (link) on the Linux kernel mailing list. It's from 2000, so there have been many improvements to IO and virtual memory in the kernel since then, but it nicely explains th...
How to find list of possible words from a letter matrix [Boggle Solver]
... solution was faster; it turns out to use regular-expression matching instead of a set of characters. Doing the same in Python about doubles the speed.
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Web colors in an Android color xml resource file
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You have surely made your own by now, but for the benefit of others, please find w3c and x11 below.
<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="white">#FFFFFF</color>
<color name="yellow">...
What's the difference between eval, exec, and compile?
...ing that has statements, if you just compiled it into bytecode before instead of passing it as a string:
>>> eval(compile('if 1: print("Hello")', '<string>', 'exec'))
Hello
>>>
works without problems, even though the compiled code contains statements. It still returns None...
Schema for a multilanguage database
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answered Nov 27 '08 at 10:02
SunWuKungSunWuKung
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Database development mistakes made by application developers [closed]
What are common database development mistakes made by application developers?
40 Answers
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What are the real-world strengths and weaknesses of the many frameworks based on backbone.js? [close
...ire in several projects and I will like to take the next step towards more advanced solutions for complex application structure.
...
Unicode equivalents for \w and \b in Java regular expressions?
... to \w, nor to Unicode identifiers, nor to Unicode line-break properties.
Additionally, the POSIX properties in Java are accessed this way:
POSIX syntax Java syntax
[[:Lower:]] \p{Lower}
[[:Upper:]] \p{Upper}
[[:ASCII:]] \p{ASCII}
[[:Alpha:]] \p{Alpha}
[[:Digit:]] \p{Digit}...