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What should I use Android AccountManager for?
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edited May 23 '17 at 10:31
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answered Dec 23 '11 at 10:07
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Hidden Features of C++? [closed]
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308
votes
Most C++ programmers are familiar with the ternary operator:
x = (y < 0)...
Is there shorthand for returning a default value if None in Python? [duplicate]
...s also returns "default" if x is any falsy value, including an empty list, 0, empty string, or even datetime.time(0) (midnight).
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Changing a specific column name in pandas DataFrame
...columns = {'two':'new_name'})
In [28]: df
Out[28]:
one three new_name
0 1 a 9
1 2 b 8
2 3 c 7
3 4 d 6
4 5 e 5
Following is the docstring for the rename method.
Definition: df.rename(self, index=None, columns=None, co...
Java naming convention for static final variables [duplicate]
...nym as a name prefix, as in:
interface ProcessStates {
int PS_RUNNING = 0;
int PS_SUSPENDED = 1;
}
Obscuring involving constant names is rare:
Constant names normally have no lowercase letters, so they will not normally obscure names of packages or types, nor will they normally s...
Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V
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There's a dynamic programming solution. We start off knowing 0 keys can make us 0 A's. Then we iterate through for i up to n, doing two things: pressing A once and pressing select all + copy followed by paste j times (actually j-i-1 below; note the trick here: the contents are still in...
Proper practice for subclassing UIView?
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300
Apple defined pretty clearly how to subclass UIView in the doc.
Check out the list below, espe...
How does lucene index documents?
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There's a fairly good article here: https://web.archive.org/web/20130904073403/http://www.ibm.com/developerworks/library/wa-lucene/
Edit 12/2014: Updated to an archived version due to the original being deleted, probably the best more recent alternative is http://lucene.apache.org/core/3_...
What does jquery $ actually return?
...et like an
array or access individual elements
via the indexer ($(sel)[0] for
example). More importantly, you can
also apply jQuery functions against
all the selected elements.
About returning nothing:
Does it always return an array? Does it return null?
You always get the same thi...
In HTML5, should the main navigation be inside or outside the element?
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