[Haskell-beginners] Re: Closure
dbastos+0 at toledo.com
Sat Aug 15 13:04:33 EDT 2009
In article <1B14D870-7355-4EFD-B0C6-026109AB4F87 at ece.cmu.edu>,
Brandon S. Allbery KF8NH wrote:
> In C you have to declare it.
The word would be `define'?
> In Haskell you can just do it on the fly:
> > map (add 3) [1..10]
I see. Just like we can create an integer on the fly in C, in Haskell
we can create functions on the fly. I guess that's quite a difference.
> or indeed
> > map (+3) [1..10]
> (The above is actually a "section", a closure created from an infix
> function. The difference is that I can specify either side of the
> operator, whereas to specify arguments other than the first for a
> regular function I must either coerce it into infix with `` or use the
> "flip" function to rearrange arguments.)
And is this mere syntax sugar?
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