WhereIn2.hs

module Demote.WhereIn2 where

--A definition can be demoted to the local 'where' binding of a friend declaration,
--if it is only used by this friend declaration.

--Demoting a definition narrows down the scope of the definition.
--In this example, demote the top level 'sq' to 'sumSquares'
--This example also aims to test the renaming of clashed/capture names.

sumSquares x y = sq x + sq y +pow      
         where pow=2
               sq z = z^pow -- Added to make test fail with no avail dest
sq 0 = 0
sq z = z^pow

pow=2

anotherFun 0 y = sq y
     where  sq x = x^2