Re: [Haskell-beginners] case statement

7 Jul 2015


      Hi Imants,

On Tue, Jul 07, 2015 at 12:46:25PM +0200, Imants Cekusins wrote:
...
is there a way to "freeze" outside variables into constants which can
be used as "case" statement patterns?
I don't think so.
...
result1 x = if x == a1 then "one"
                   else if x == a2 then "two"
                   else "three"
                   where a1 = 1
                         a2 = 2
There're several other ways to solve this:

   result1 1 = "one"
   result1 2 = "two"
   result1 _ = "three"

Or:

   result1 x 
      | x == 1 = "one"
      | x == 2 = "two"
      | _      = "three"


Greetings,
Daniel

Re: [Haskell-beginners] case statement

Daniel Trstenjak