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How to get all subsets of a set? (powerset)
...ols page has exactly a powerset recipe for this:
from itertools import chain, combinations
def powerset(iterable):
"powerset([1,2,3]) --> () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)"
s = list(iterable)
return chain.from_iterable(combinations(s, r) for r in range(len(s)+1))
Output:...
When should I use the “strictfp” keyword in java?
...yone actually have an example of when you would use the strictfp keyword in Java? Has anyone actually found a use for this?
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strdup() - what does it do in C?
What is the purpose of the strdup() function in C?
10 Answers
10
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Swift to Objective-C header not created in Xcode 6
I have recently been working to add Swift to an existing project, to get to try it out in a real-world fashion.
31 Answers
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What are the differences in die() and exit() in PHP?
What are the differences between die() and exit() functions in PHP?
16 Answers
16
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Using os.walk() to recursively traverse directories in Python
I want to navigate from the root directory to all other directories within and print the same.
13 Answers
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How do I define and use an ENUM in Objective-C?
I declared an enum in my implementation file as shown below, and declared a variable of that type in my interface as PlayerState thePlayerState; and used the variable in my methods. But I am getting errors stating that it is undeclared. How do I correctly declare and use a variable of type PlayerSta...
C# vs C - Big performance difference
I'm finding massive performance differences between similar code in C anc C#.
13 Answers
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Does Python support short-circuiting?
Does Python support short-circuiting in boolean expressions?
3 Answers
3
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Can I implement an autonomous `self` member type in C++?
...uivalent of PHP's self keyword , which evaluates to the type of the enclosing class.
13 Answers
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