Re: [Haskell] (.) . (.)

29 May 2006

      Taral wrote:
...
On 5/28/06, Dominic Steinitz <dominic.steinitz@blueyonder.co.uk> wrote:
...
Is this defined in some library? Thanks, Dominic.
Don't think so. I use:
\a b -> f (g a b)
Taral,

Thanks. What prompted this question is that I find myself writing things 
like:

foo = ((.).(.)) concat intersperse

I think

foo' = \a b -> concat (intersperse a b)

is probably clearer but I ended up writing

infixr $.
($.) = (.) . (.)

and then

foo' = concat $. intersperse

Of course one could go on and define

infixr $..
($..) = (.) . (.) . (.)

and so on.

I just wondered if there was a standard nomenclature for such functions 
a la liftM, liftM2 etc?

The answer seems to be no.

Thanks, Dominic.