[Haskell-beginners] Re: Iterating through a list of char...

[David Virebayre]

On Thu, Apr 29, 2010 at 3:52 PM, jean verdier <verdier.jean at gmail.com> wrote:
> I may have missed it in this thread, but if not, why didn't anyone
> suggest:
>
> trans []         = []
> trans [x]        = [x]
> trans ('a':_:xs) = 'a' : 'A' : trans xs
> trans     (x:xs) =        x  : trans xs

While as a beginner (I still am !) I would come up with a solution
like this one, on the long run it helps trying to solve those problem
with maps, folds, filters, and zips: Eventually, you'll find the code
more readable, easier to write,  and there's perhaps a better chance
that it can be optimised by ghc.

David.