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Haskell Type vs Data Constructor
I am learning Haskell from learnyouahaskell.com . I am having trouble understanding type constructors and data constructors. For example, I don't really understand the difference between this:
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How to generate a random number in C++?
I'm trying to make a game with dice, and I need to have random numbers in it (to simulate the sides of the die. I know how to make it between 1 and 6). Using
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How can I disable logging while running unit tests in Python Django?
I am using a simple unit test based test runner to test my Django application.
15 Answers
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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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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:...
strdup() - what does it do in C?
What is the purpose of the strdup() function in C?
10 Answers
10
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Identifying and removing null characters in UNIX
I have a text file containing unwanted null characters (ASCII NUL, \0 ). When I try to view it in vi I see ^@ symbols, interleaved in normal text. How can I:
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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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What is array to pointer decay?
What is array to pointer decay? Is there any relation to array pointers?
9 Answers
9
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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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