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How do I create a unique constraint that also allows nulls?
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edited May 23 '17 at 12:10
Community♦
111 silver badge
answered Apr 20 '09 at 10:20
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Secure random token in Node.js
... thejhthejh
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UICollectionView reloadData not functioning properly in iOS 7
... Cesare
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answered Dec 4 '13 at 21:09
Shaunti FondrisiShaunti Fondrisi
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How to change variables value while debugging with LLDB in Xcode?
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expr (void)[label setText:@"Foo"] should do it. Dot-Syntax usually won't work in the debugger. lldb probably interprets it as you wanted to...
Create space at the beginning of a UITextField
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edited Jan 20 '19 at 14:10
Søren Gade
3555 bronze badges
answered Nov 21 '14 at 17:13
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Get time difference between two dates in seconds
... = new Date();
var seconds = (endDate.getTime() - startDate.getTime()) / 1000;
Or even simpler (endDate - startDate) / 1000 as pointed out in the comments unless you're using typescript.
The explanation
You need to call the getTime() method for the Date objects, and then simply subtract them and...
What is the AppDelegate for and how do I know when to use it?
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edited Oct 27 '10 at 6:40
answered Mar 17 '09 at 7:40
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Javascript seconds to minutes and seconds
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answered Sep 17 '10 at 6:58
GumboGumbo
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Create an instance of a class from a string
...job.
– Mehdi Dehghani
Dec 14 '19 at 10:21
The keyword str is used as a part of naming convention for variables. Certai...