[Haskell-cafe] The difference between ($) and application

[Marcin 'Qrczak' Kowalczyk]

Andres Loeh <andres at cs.uu.nl> writes:

> The function ($) is the identity function, restricted to functions.

Almost. With the standard definition of
   f $ x = f x
it happens that
   ($) undefined `seq` () = ()
   id  undefined `seq` () = undefined

-- 
   __("<         Marcin Kowalczyk
   \__/       qrczak at knm.org.pl
    ^^     http://qrnik.knm.org.pl/~qrczak/