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What exactly do “u” and “r” string flags do, and what are raw string literals?
...>>> sys.getsizeof('ciao')
28
>>> sys.getsizeof(u'ciao')
34
The Unicode object of course takes more memory space (very small difference for a very short string, obviously ;-).
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Why does Python use 'magic methods'?
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64
AFAIK, len is special in this respect and has historical roots.
Here's a quote from the FAQ:
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What is the list of supported languages/locales on Android?
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14 Answers
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Git commits are duplicated in the same branch after doing a rebase
...Justin ᚅᚔᚈᚄᚒᚔJustin ᚅᚔᚈᚄᚒᚔ
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How can I correctly prefix a word with “a” and “an”?
...efix, and follow its lead. If you didn't discard the empty prefix in step 4, then there will always be a matching prefix (namely the empty prefix), otherwise you may need a special case for a completely-non matching string (such input should be very rare).
You probably can't get much better than ...
Get users by name property using Firebase
...ld attribute (for example, all users with name === "Alex").
In October 2014, Firebase rolled out new querying functionality via the orderByChild() method, that enables you to do this type of query quickly and efficiently. See the updated answer below.
When writing data to Firebase, you have a f...
Use of Application.DoEvents()
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Hmya, the enduring mystique of DoEvents(). There's been an enormous amount of backlash agains...
How can I use optional parameters in a T-SQL stored procedure?
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If you have the proper SQL Server 2008 version (SQL 2008 SP1 CU5 (10.0.2746) and later), you can use this little trick to actually use an index:
Add OPTION (RECOMPILE) onto your query, see Erland's article, and SQL Server will resolve the OR from within (@LastName IS NULL OR LastName= @LastName)...
Java EE web development, where do I start and what skills do I need? [closed]
...rically, there was also the term "J2EE" which covered versions 1.2 until 1.4. The "Java EE" covered versions 5 until 8. See also Java Platform, Enterprise Edition, History on Wikipedia.
What exactly do I need to learn?
I assume that you're already familiar with client side technologies like HTML, ...
Strip HTML from strings in Python
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I always used this function to strip HTML tags, as it requires only the Python stdlib:
For Py...