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Listing all permutations of a string/integer
...ame logic)
In human language:
In short:
The permutation of 1 element is one element.
The permutation of a set of elements is a list each of the elements, concatenated with every permutation of the other elements.
Example:
If the set just has one element -->
return it.
perm(a) -> a
If the s...
What is Scala's yield?
...
Right. If you just have a simple map -- one generator with no if -- I'd certainly say calling map is more readable. If you have a several generators depending on each other, and/or filters, you may prefer a for expression.
– Alexey Romanov
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What is the difference between setUp() and setUpClass() in Python unittest?
...Class() in the Python unittest framework? Why would setup be handled in one method over the other?
2 Answers
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Cannot use identity column key generation with ( TABLE_PER_CLASS )
...lumn in MsSQL. It is column based. In a "table-per-class" strategy you use one table per class and each one has an ID.
Try:
@GeneratedValue(strategy = GenerationType.TABLE)
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How do I get monitor resolution in Python?
...lays), you have to call SetProcessDPIAware before initializing the GUI components (and not before calling the GetSystemMetrics function). This is true for most of the answers here (GTK, etc) on the win32 platform.
– totaam
Sep 29 '14 at 4:09
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MVC 5 Access Claims Identity User Data
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Sorry, one last question. Do I need to create my own custom ClaimsAuthenticationManager class and Application_PostAuthenticateRequest() in Global.asax like this dotnetcodr.com/2013/02/25/… before my code above will work? Thanks ag...
What is the use of the ArraySegment class?
...,
but you can't represent say all odds
and all evens. Note that the phone
teaser proposed by The1 could have
been elegantly solved using
ArraySegment partitioning and a tree
structure. The final numbers could
have been written out by traversing
the tree depth first. This would hav...
How does the C code that prints from 1 to 1000 without loops or conditional statements work?
...hout loops or conditionals :
But I don't understand how it works. Can anyone go through the code and explain each line?
2...
Can Objective-C switch on NSString?
...
Unfortunately they cannot. This is one of the best and most sought after utilizations of switch statements, so hopefully they hop on the (now) Java (and others) bandwagon!
If you are doing card names, perhaps assign each card object an integer value and switc...
UIView Hide/Show with animation
...add #import <QuartzCore/QuartzCore.h> to your header. Now you can do one of the following:
1) set button.layer.shouldRasterize = YES; and then use the alpha animation code that Michail provided in his answer. This will prevent the layers from blending weirdly, but has a slight performance pen...