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Best Practice - NSError domains and codes for your own project/app
...yInternalError = [NSError errorWithDomain:@"com.davedelong.myproject" code:42 userInfo:someUserInfo];
The third part of the domain (@"myproject") is just used to differentiate the errors from this project ("My Project") from errors in another project ("My Other Project" => com.davedelong.myothe...
jQuery document.ready vs self calling anonymous function
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Rafael Herscovici
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answered Jul 15 '10 at 20:06
jAndyjAndy
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Useful example of a shutdown hook in Java?
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edited Sep 23 '11 at 2:48
trashgod
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answe...
In CMake, how can I test if the compiler is Clang?
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A reliable check is to use the CMAKE_<LANG>_COMPILER_ID variables. E.g., to check the C++...
Why is Class.newInstance() “evil”?
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answered Oct 12 '08 at 10:43
Chris Jester-YoungChris Jester-Young
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What's the difference between findAndModify and update in MongoDB?
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Asya KamskyAsya Kamsky
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How to pass object with NSNotificationCenter
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edited Oct 31 '14 at 13:53
answered Oct 25 '11 at 22:42
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Pandas: create two new columns in a dataframe with values calculated from a pre-existing column
... return x*2, x*3
...:
In [3]: df = DataFrame({'a': [1,2,3], 'b': [2,3,4]})
In [4]: df
Out[4]:
a b
0 1 2
1 2 3
2 3 4
In [5]: df["A1"], df["A2"] = zip(*df["a"].map(calculate))
In [6]: df
Out[6]:
a b A1 A2
0 1 2 2 3
1 2 3 4 6
2 3 4 6 9
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What do the crossed style properties in Google Chrome devtools mean?
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Jacob MattisonJacob Mattison
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XPath OR operator for different nodes
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dur
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answered Mar 18 '11 at 11:32
StephanStephan
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