On 2013-12-29 13:47, harry wrote:
Tony Morris
writes: (`foo` 3) Scala is very limited when it comes to this point free code.
On 29/12/2013 10:17 PM, "harry"
wrote: Is there any reason not to include Scala-like anonymous arguments in Haskell? For example, I would like to write map (\x -> foo x 3) as map (foo _ 3) The named argument in this and similar cases adds nothing but visual and namespace clutter.
How about a slightly more complex example?
map (\x -> foo 4 'f' (bar x) 5 'j')
There comes a point where point-free notation becomes unreadable.
If you write map (foo 4 'f' (bar _) 5 'j') How would the compiler know whether you meant map (\x -> foo 4 'f' (bar x) 5 'j') or map (foo 4 'f' (\x -> bar x) 5 'j') ? Lambda's make it explicit where the variable is bound, which is a good thing, IMO. Twan