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Equivalent of “throw” in R
...ow does one "throw" an error in R? I have a function that takes a data fram>me m> and som>me m> column nam>me m>s and does stuff with them. If the columns don't exist, I want the function to stop and to stop all functions depending on it.
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jQuery disable a link
...f you want to preventDefault() only if a certain condition is fulfilled (som>me m>thing is hidden for instance), you could test the visibility of your ul with the class expanded. If it is visible (i.e. not hidden) the link should fire as normal, as the if statem>me m>nt will not be entered, and thus the defau...
Modify table: How to change 'Allow Nulls' attribute from not null to allow null
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Note there are som>me m> cases where this might not work - see this DBA Stack Exchange answer if you're getting an ALTER TABLE ALTER COLUMN failed because one or more objects access this column.
– Jarrod Dixon♦
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Checking if all elem>me m>nts in a list are unique
... the best way (best as in the conventional way) of checking whether all elem>me m>nts in a list are unique?
14 Answers
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How to show all parents and subclasses of a class in IntelliJ IDEA?
...ault is mapped to <Shift+Escape>. So far it felt way more natural to m>me m> when closing "floating windows" (type hierarchy included).
– Eyal Roth
Nov 19 '15 at 18:12
2
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How do I change the color of the text in a UIPickerView under iOS 7?
I'm aware of the pickerView:viewForRow:forComponent:reusingView m>me m>thod, but when using the view it passes in reusingView: how do I change it to use a different text color? If I use view.backgroundColor = [UIColor whiteColor]; none of the views show up anymore.
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Is there a difference between x++ and ++x in java?
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++x is called preincrem>me m>nt while x++ is called postincrem>me m>nt.
int x = 5, y = 5;
System.out.println(++x); // outputs 6
System.out.println(x); // outputs 6
System.out.println(y++); // outputs 5
System.out.println(y); // outputs 6
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How to convert a set to a list in python?
...eady a list
type(my_set)
>>> <type 'list'>
Do you want som>me m>thing like
my_set = set([1,2,3,4])
my_list = list(my_set)
print my_list
>> [1, 2, 3, 4]
EDIT :
Output of your last comm>me m>nt
>>> my_list = [1,2,3,4]
>>> my_set = set(my_list)
>>> my_new_...
What is object slicing?
Som>me m>one m>me m>ntioned it in the IRC as the slicing problem.
18 Answers
18
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Controlling fps with requestAnimationFram>me m>?
It seems like requestAnimationFram>me m> is the de facto way to animate things now. It worked pretty well for m>me m> for the most part, but right now I'm trying to do som>me m> canvas animations and I was wondering: Is there any way to make sure it runs at a certain fps? I understand that the purpose of rAF is ...