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Devise form within a different controller
...er, but it calls out [undefined local variable or method `build_resource'] error. I tried including devise internal helper by inserting 'include Devise::Controllers::InternalHelpers' at the top of the 'mains_controller' but it also calls out error with 'AbstractController::ActionNotFound'
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How to remove all null elements from a ArrayList or String Array?
...t saying.
– Hemanth
Feb 3 '16 at 14:05
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Awaiting multiple Tasks with different results
...stion is whether you want to await them one at a time or all together. The error handling is slightly different - if you use Task.WhenAll, then it will await them all, even if one of them fails early.
– Stephen Cleary
Mar 13 '15 at 12:17
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Upgrade python in a virtualenv
... just use virtualenv". EDIT: actually, it does work! It just also shows an error message about "ensurepip".
– rspeer
May 18 '17 at 20:01
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Android: checkbox listener
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You get the error because you imported wrong package.You should import android.widget.CompoundButton.OnCheckedChangeListener;
So the callback should be :
box.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@...
How do I return multiple values from a function? [closed]
...doesn't offer any advantage over tuples": it's also more readable and less error prone as you access the data based on its name rather than position.
– Denis Dollfus
Jan 16 at 13:09
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Is 0 a decimal literal or an octal literal?
...l literal could be interpreted as a decimal literal. I can see the compile error, now: ERROR: 0 is ambiguous, could be octal zero or could be decimal zero. Consider using (1 - 1) to disambiguate.
– CB Bailey
Aug 1 '11 at 9:25
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What is difference between functional and imperative programming languages?
Most of the mainstream languages, including object-oriented programming (OOP) languages such as C#, Visual Basic, C++, and Java were designed to primarily support imperative (procedural) programming, whereas Haskell/gofer like languages are purely functional. Can anybody elaborate on what is the dif...
How to increase font size in the Xcode editor?
...ects you have open in Xcode"? I don't know if it's expected behavior or my error, however in Xcode Version 5.1 (5B130a), I can't change fonts if there are any projects currently open.
– original_username
Mar 17 '14 at 9:07
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What is the difference between the remap, noremap, nnoremap and vnoremap mapping commands in Vim?
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