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Remove all values within one list from another list? [duplicate]
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>>> a = range(1, 10)
>>> [x for x in a if x not in [2, 3, 7]]
[1, 4, 5, 6, 8, 9]
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Using Mockito with multiple calls to the same method with the same arguments
...n(someMock.someMethod()).thenAnswer(new Answer() {
private int count = 0;
public Object answer(InvocationOnMock invocation) {
if (count++ == 1)
return 1;
return 2;
}
});
Or using the equivalent, static doAnswer method:
doAnswer(new Answer() {
private ...
Capturing touches on a subview outside the frame of its superview using hitTest:withEvent:
...plication frame, and a subview MenuView which takes up only the bottom ~20%, and then MenuView contains its own subview ButtonView which actually resides outside of MenuView 's bounds (something like this: ButtonView.frame.origin.y = -100 ).
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Detect Retina Display
...unning iOS4+ and if the [UIScreen mainScreen].scale property is equal to 2.0. You CANNOT assume a device is running iOS4+ if the scale property exists, as the iPad 3.2 also contains this property.
On an iPad running iOS3.2, scale will return 1.0 in 1x mode, and 2.0 in 2x mode -- even though we kno...
Why is the minimalist, example Haskell quicksort not a “true” quicksort?
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Matthias Braun
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answered Oct 10 '11 at 20:26
patpat
12...
Sorting an array of objects in Ruby by object attribute?
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230
I recommend using sort_by instead:
objects.sort_by {|obj| obj.attribute}
Especially if attrib...
How to change the background color of a UIButton while it's highlighted?
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30 Answers
30
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Select n random rows from SQL Server table
I've got a SQL Server table with about 50,000 rows in it. I want to select about 5,000 of those rows at random. I've thought of a complicated way, creating a temp table with a "random number" column, copying my table into that, looping through the temp table and updating each row with RAND() , and ...
Is there a way to select sibling nodes?
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edited Feb 20 '15 at 16:19
answered May 9 '09 at 0:12
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How do I concatenate const/literal strings in C?
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401
In C, "strings" are just plain char arrays. Therefore, you can't directly concatenate them with...