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Generating random numbers in Objective-C
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answered Oct 2 '08 at 16:00
lajoslajos
24.4k1919 gold badges6161 silver badges7474 bronze badges
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How do I check if a list is empty?
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5765
if not a:
print("List is empty")
Using the implicit booleanness of the empty list is quite ...
Patterns for handling batch operations in REST web services?
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6
It isn't necessary. POST is a factory-pattern method, it is less explicit and obvious than PUT/DELETE/GET. The only expectation is that the ...
Django Rest Framework: Dynamically return subset of fields
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You can override the serializer __init__ method and set the fields attribute dynamically, based on the query params. You can access the request object throughout the context, passed to the serializer.
Here is a copy&paste from Django Rest Framework doc...
Mercurial (hg) commit only certain files
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Vadim Kotov
6,58788 gold badges4343 silver badges5555 bronze badges
answered Dec 1 '11 at 12:48
Martin GeislerMar...
How to convert image to byte array
...ageIn.RawFormat
– S.Serpooshan
Nov 26 '16 at 12:31
1
This does not seem to be repeatable, or at l...
How to reshape data from long to wide format
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268
Using reshape function:
reshape(dat1, idvar = "name", timevar = "numbers", direction = "wide")...
In STL maps, is it better to use map::insert than []?
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– David Rodríguez - dribeas
Jan 4 '18 at 16:14
1
there is a way to tell if you inserted or just assigne...
iPhone UITextField - Change placeholder text color
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Since the introduction of attributed strings in UIViews in iOS 6, it's possible to assign a color to the placeholder text like this:
if ([textField respondsToSelector:@selector(setAttributedPlaceholder:)]) {
UIColor *color = [UIColor blackColor];
textField.attributedPlaceholder = [[...
How do I check if a string contains another string in Swift?
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1067
You can do exactly the same call with Swift:
Swift 4 & Swift 5
In Swift 4 String is a col...