LetIn3.hs

module LiftOneLevel.LetIn3 where

--A definition can be lifted from a where or let into the surronding binding group.
--Lifting a definition widens the scope of the definition.

--In this example, lift 'sq' in 'sumSquares'
--This example aims to test lifting a definition from a let clause to a let clause,

sumSquares x y = let pow=2
                 in (let sq 0=0
                         sq z=z^pow
                      in sq x + sq y)
 
anotherFun 0 y = sq y
     where sq x = x^2