[Haskell-cafe] Library function for map+append
ekirpichov at gmail.com
Tue Aug 18 07:00:20 EDT 2009
Have you done any measurements that prove that such a function would
indeed increase performance noticeably?
2009/8/18 Dusan Kolar <kolar at fit.vutbr.cz>:
> Hello all,
> During a small project I'm trying to develop a small application. It
> becomes quite often that I need a function mapapp:
> mapapp _  ap = ap
> mapapp f (a:as) ap = f a : map f as ap
> I tried hoogle to find such a function with no success. Is there any
> function/functions built-in "standard" libraries that could easily satisfy
> the functionality with the same or even better (?) efficiency?
> Of course,
> (map f list) ++ append
> would do the same as
> mapapp f list append
> but with less efficiency. Or am I wrong?
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