[Haskell-beginners] fmap fmap

[Federico Brubacher]

fmap . fmap is close to applicative ?
is it possible to do applicative instead of combining 2 fmaps ?

Thanks

On Wed, Aug 5, 2009 at 12:29 AM, Tony Morris <tonymorris at gmail.com> wrote:

> Michael P Mossey wrote:
> > How does one write
> >
> > fmap (fmap (*2)) xs
> >
> > without parenthesis? (Using . and $ instead.)
> >
> > I don't really understand . and $ well enough I guess. I tried a bunch
> > of stuff but nothing worked.
> >
> > -Mike
> > _______________________________________________
> > Beginners mailing list
> > Beginners at haskell.org
> > http://www.haskell.org/mailman/listinfo/beginners
> >
> fmap . fmap $ (*2)
>
> or perhaps:
>
> (fmap . fmap) (*2)
>
> --
> Tony Morris
> http://tmorris.net/
>
>
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Federico Brubacher
www.fbrubacher.com

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