[Haskell-cafe] Function composition in run-time?
dokondr at gmail.com
Wed Aug 24 14:57:19 CEST 2011
On Wed, Aug 24, 2011 at 4:44 PM, Iustin Pop <iustin at google.com> wrote:
> On Wed, Aug 24, 2011 at 04:35:42PM +0400, dokondr wrote:
> > Hi,
> > What is the Haskell way to compose functions in run-time?
> > Depending on configuration parameters I need to be able to compose
> > in several ways without recompilation.
A simple alternative to if would be:
> options = [ ("foo", f1 . f2 . f3)
> , ("bar", f1 . f3 )]
> and then "lookup param options". I don't know if this is what you're
> looking for, though.
Yes, this is what I need - simple and easy. Yet, how function application
will work in this case ?
I mean after lookup returns me a composition ... need to check what type
will it be.
All the best,
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