Re: [Haskell-beginners] More than one way to skin a cat question - repeat

(:) is O(1), (++) is O(n). Try and implement (++) and it should be easy to see why. On 11 Apr 2013 10:44, "Angus Comber" wrote:

LYAH beginner on page 55.

What I try to do is see the heading of a section, eg repeat function and then try to come up with my own version before looking at books implementation.

Here is my implementation:

repeat' :: a -> [a] repeat' x = [x] ++ repeat' x

Here is books:

repeat' :: a -> [a] repeat' x = x:repeat' x

Mine appears to work. Is mine just as good? Are there problems with my way? Is books way more idiomatic Haskell?

I want to learn the best approaches hence my question.

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