bloglang/13/examples/mutual_recursion.txt

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data Bool = { True, False }
data List = { Nil, Cons Int List }
defn if c t e = {
case c of {
True -> { t }
False -> { e }
}
}
defn oddEven l e = {
case l of {
Nil -> { e }
Cons x xs -> { evenOdd xs e }
}
}
defn evenOdd l e = {
case l of {
Nil -> { e }
Cons x xs -> { oddEven xs e }
}
}
defn main = { if (oddEven (Cons 1 (Cons 2 (Cons 3 Nil))) True) (oddEven (Cons 1 (Cons 2 (Cons 3 Nil))) 1) 3 }