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@property retain, assign, copy, nonatomic in Objective-C
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answered Oct 21 '11 at 21:34
BlamdarotBlamdarot
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How to test which port MySQL is running on and whether it can be connected to?
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edited May 25 '18 at 7:21
answered Jul 25 '13 at 16:49
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What is the purpose of the single underscore “_” variable in Python?
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It's just a variable name, and it's conventional in python to use _ for throwaway variables. ...
Should I implement __ne__ in terms of __eq__ in Python?
...rrected in Python 3.4 on January 2015, as ShadowRanger noticed (see issue #21408).
Well, let's explain this.
As noted earlier, Python 3 by default handles __ne__ by first checking if self.__eq__(other) returns NotImplemented (a singleton) - which should be checked for with is and returned if so,...
Making heatmap from pandas DataFrame
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BrideauBrideau
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How do you see the entire command history in interactive Python?
...ple. Thanks.
– Tim S.
Sep 23 '15 at 21:53
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Cool! I've added an history() function with the above...
Remove rows with all or some NAs (missing values) in data.frame
...mmul mmus rnor cfam
2 ENSG00000199674 0 2 2 2 2
6 ENSG00000221312 0 1 2 3 2
na.omit is nicer for just removing all NA's. complete.cases allows partial selection by including only certain columns of the dataframe:
> final[complete.cases(final[ , 5:6]),]
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Why catch and rethrow an exception in C#?
...ard Szalay
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answered May 19 '09 at 8:02
Fredrik MörkFredrik Mörk
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What is the difference between syntax and semantics in programming languages?
...ds on context.
– ymln
Dec 20 '18 at 21:20
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How to get Bitmap from an Uri?
... Mark IngramMark Ingram
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