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How to implement a good __hash__ function in python [duplicate]
...or inequal objects, just leave it out. Don't make the hash computation any more expensive than it needs to be.
Edit: I would recommend against using xor to mix hashes in general. When two different properties have the same value, they will have the same hash, and with xor these will cancel eachothe...
Math.random() versus Random.nextInt(int)
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Here is the detailed explanation of why "Random.nextInt(n) is both more efficient and less biased than Math.random() * n" from the Sun forums post that Gili linked to:
Math.random() uses Random.nextDouble() internally.
Random.nextDouble() uses Random.next() twice to generate a dou...
What is the purpose of the var keyword and when should I use it (or omit it)?
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How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops
... three lower case letter a, aa, aaa
+ Match at least one, or more, of the pattern defined before it.
E.g. a+ will match consecutive a's a, aa, aaa, and so on
? Match zero or one of the pattern defined before it.
E.g. Pattern may or may not be present but can only be matched one ...
Unit testing private methods in C#
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Is there a way to list pip dependencies/requirements?
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The accepted answer is no longer relevant for more current versions of pip and does not give an immediate answer without perusing multiple comments so I am providing an updated answer.
This was tested with pip versions 8.1.2, 9.0.1, 10.0.1, and 18.1.
To get the output ...
Can you find all classes in a package using reflection?
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Show and hide a View with a slide up/down animation
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Differences between utf8 and latin1
...ibake. You may find the introductory text of this article useful (and even more if you know a bit Java).
Note that full 4-byte UTF-8 support was only introduced in MySQL 5.5. Before that version, it only goes up to 3 bytes per character, not 4 bytes per character. So, it supported only the BMP plan...
Getting a timestamp for today at midnight?
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@SamHuckaby: It is even more easy: $timestamp = strtotime('today'); is midnight. But pssst the one above looks cooler as an answer to the question ;)
– hakre
Oct 29 '12 at 21:30
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