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Extract a dplyr tbl column as a vector
... How would I do this if I want to pass not the colname itself but a string variable that contains it?
– mzuba
Aug 7 '17 at 22:16
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Where is shared_ptr?
...rking). Simply stating std , tr1 and <memory> is not helping at all! I have downloaded boosts and all but still it doesn't show up! Can someone help me by telling exactly where to find it?
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Select random lines from a file
... @MonaJalal nope just faster, since it doesn't have to compare lines at all.
– rogerdpack
May 15 '17 at 17:20
Does ...
specify project file of a solution using msbuild
...and ')' with '_' in the folder name (GYP generated projects). I guess it's all the special characters are replaced with underscore.
– Maxime Viargues
Jun 13 '16 at 1:49
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What's the standard way to work with dates and times in Scala? Should I use Java types or there are
...atted(DateTimeFormat.forPattern("yyyyMMdd")) - I get an error asking for a string argument.
– Ivan
Sep 2 '10 at 22:59
1
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Ruby - test for array
...'abc'.size both work, but 'abc'.count doesn't work like that).
Caution: a string is_a? Enumerable, so perhaps this isn't what you want... depends on your concept of an array like object.
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im...
Unable to install Maven on Windows: “JAVA_HOME is set to an invalid directory”
...ollowed the Maven tutorial to the letter but I still can't get Maven installed on Windows.
16 Answers
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Is a RelativeLayout more expensive than a LinearLayout?
... your view hierarchy is simple. But if your hierarchy is complex, doing an extra measure pass could potentially be fairly costly. Also if you nest RelativeLayouts, you get an exponential measurement algorithm.
https://www.youtube.com/watch?v=NYtB6mlu7vA&t=1m41s
https://www.youtube.com/watch?v=...
Getting attributes of a class
...gt;> inspect.getmembers(MyClass, lambda a:not(inspect.isroutine(a)))
[('__class__', type),
('__dict__',
<dictproxy {'__dict__': <attribute '__dict__' of 'MyClass' objects>,
'__doc__': None,
'__module__': '__main__',
'__weakref__': <attribute '__weakref__' of 'MyClass' obje...
What is the difference between __init__ and __call__?
I want to know the difference between __init__ and __call__ methods.
13 Answers
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