[Haskell-beginners] partial application
Keshav Kini
keshav.kini at gmail.com
Mon Dec 3 22:04:36 CET 2012
Brent Yorgey <byorgey at seas.upenn.edu> writes:
> On Mon, Dec 03, 2012 at 12:28:08PM +0000, Miguel Negrao wrote:
>> Is there a syntax in Haskell for partial application that would be something like this the following ?
>>
>> f a b c d = a +b+ c+ d
>>
>> g = f _ 1 2 3
>>
>> or the only way to do it is like below ?
>>
>> g = (\x -> f x 1 2 3)
>
> Yes, a lambda is the only way to do it.
In the case where you have fewer (specifically two) variables, you can
also use `flip`::
f a b = a / b
-- g = f _ 2 can be written as:
g = flip f 2
-Keshav
More information about the Beginners
mailing list