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No resource found - Theme.AppCompat.Light.DarkActionBar
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17 Answers
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Rails find_or_create_by more than one attribute?
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467
Multiple attributes can be connected with an and:
GroupMember.find_or_create_by_member_id_and_g...
How to change Navigation Bar color in iOS 7?
How do I change the Navigation Bar color in iOS 7?
18 Answers
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Boolean.hashCode()
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1231 and 1237 are just two (sufficiently large) arbitrary prime numbers. Any other two large prime numbers would do fine.
Why primes?
Suppose for a second that we picked composite numbers (non-primes), say 1000 and 2000. When inserting ...
Setting a system environment variable from a Windows batch file?
... environment variable at the system level from a command prompt in Windows 7 (or even XP for that matter). I am running from an elevated command prompt.
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Do Swift-based applications work on OS X 10.9/iOS 7 and lower?
Will Swift-based applications work on OS X 10.9 (Mavericks)/iOS 7 and lower?
19 Answers
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Can dplyr package be used for conditional mutating?
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Use ifelse
df %>%
mutate(g = ifelse(a == 2 | a == 5 | a == 7 | (a == 1 & b == 4), 2,
ifelse(a == 0 | a == 1 | a == 4 | a == 3 | c == 4, 3, NA)))
Added - if_else: Note that in dplyr 0.5 there is an if_else function defined so an alternative would be to replace ife...
warning: [options] bootstrap class path not set in conjunction with -source 1.5
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edited Apr 26 '17 at 18:01
Dave Jarvis
27.6k3535 gold badges157157 silver badges281281 bronze badges
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How can Xcode 6 adaptive UIs be backwards-compatible with iOS 7 and iOS 6?
...o the UI with Size Classes in Interface Builder DO appear correctly on iOS 7 devices and the Preview in Xcode. For example, I changed some Auto Layout constraints and font sizes for Regular height Regular width and those changed constraints are visible in the iPad Simulator running iOS 7.0.
All siz...
New features in java 7
What new features in java 7 is going to be implemented?
And what are they doing now?
8 Answers
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