Re: [Haskell-cafe] Comparing functions

[Vlatko Basic]

-------- Original Message -------- Subject: Re: [Haskell-cafe] Comparing functions From: Brandon Allbery <allber...@gmail.com> To: Vlatko Bašić <vlatko.ba...@gmail.com> Cc: Haskell-Cafe <haskell-cafe@haskell.org> Date: 11.07.2013 20:45 On Thu, Jul 11, 2013 at 2:11 PM, Vlatko Basic <vlatko.ba...@gmail.com> wrote: The problem here isn't quite what you think it is; (==) is not a constructor, therefore it is a *variable*. It's exactly the same problem as     a = 5     -- ...     foo a = 3 -- this does NOT compare with the previous value of "a"; it's identical to the next line!     foo x = x Hm, I thought it is a pattern match with constant, as in f ('a':xs) == I wonder what you'd make of this definition, then?     (*) `on` f = \x y -> f x * f y   According to the enlightenment above, I'd say (*) is a variable that holds some function/operator that is applied on (f x) and (f y),  not the multiplication, right? --  brandon s allbery kf8nh                               sine nomine associates allber...@gmail.com                                  ballb...@sinenomine.net unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net

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