Tsunkiet Man wrote:
Hello,
I would like to ask wheter there are other instances of the class Integral?
Lots of them. You can define a few of them yourself, you know.
And I would like to ask what the difference is between the following functions: SomeFunctionA :: (Integral a) => a -> a,
Perfectly correct.
SomeFunctionB (Integer a) => a -> a, SomeFunctionC (Int a) => a -> a.
Both incorrect. Integral is a class, but Integer and Int are types.
What I do know is, that the Int can have underflow and overflows, however I don't actually see the difference (and I can't really find a difference on Google as it gives me results that aren't really relevant to my question) between prefering to use an Integral a when I've already got an Integer.
Sorry, didn't understand your question.
(Assuming I didn't missed the definiton of a Integral, which has by definition (I looked it up on Google: http://www.zvon.org/other/haskell/Outputprelude/Integral_c.html) has two instances)
No. It makes no sense to say "by definition ... has that number of instances". Instances of class are not included in it's definition and could be defined separately.
Can someone explain to me what kind of advantages and disadvantages I would get when substituting SomeFunctionB for someFunctionA?
Working program would certainly be an advantage.
Thank you for your help!
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