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When should null values of Boolean be used?
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edited May 1 '14 at 10:38
Tiny
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Extract month and year from a zoo::yearmon object
...ar with century
[1] "2012"
> format(date1, "%m") ## numeric month
[1] "03"
These are returned as characters. Where appropriate, wrap in as.numeric() if you want the year or numeric month as a numeric variable, e.g.
> as.numeric(format(date1, "%m"))
[1] 3
> as.numeric(format(date1, "%Y"))...
Detect current device with UI_USER_INTERFACE_IDIOM() in Swift
...C, the UI_USER_INTERFACE_IDIOM() macro is only required when targeting iOS 3.2 and below. When deploying to iOS 3.2 and up, you can use [UIDevice userInterfaceIdiom] directly.
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Looking to understand the iOS UIViewController lifecycle
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edited May 10 '19 at 16:03
Cœur
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What is the exact meaning of IFS=$'\n'?
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edited Apr 3 '17 at 16:15
mikemaccana
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What is the difference between ng-if and ng-show/ng-hide
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Gajus
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answered Oct 4 '13 at 9:27
AlwaysALearnerAlwa...
How can I list all tags in my Git repository by the date they were created?
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edited Jan 31 at 17:23
L S
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Accessing inactive union member and undefined behavior?
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how to draw directed graphs using networkx in python?
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edited Dec 31 '17 at 19:36
Scott Lawton
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