Question

I am doing a program that have very similar code blocks, and I was trying to make a where in a “block”.
Just an example

function "sum" x = x + a
function "product" x = x * a
  where 
    a = 2

I want the ‘a’ to be replaced in both lines, but I didn’t find out if this is possible using where

Thanks in advance

Answer 1

If you really need this, you need to merge the two function clauses. One way to do this:

func what x = case what of
        "add" -> x+a
        "mul" -> x*a
    where
       a = 2