Is there a tool to see reduction steps?
2012-10-10 20:53:31 GMT
I have been given a piece of code that uses Tie-ing the Knot concept to label a tree of nodes in breath first manner. It seems to work fine, but I am having trouble expanding the code on my own to see the evaluation process. I like to know if there is a tools to use to see the reduction steps.
data Tree = Leaf | Node Tree Int Tree deriving Show
label (Node ln _ rn) ((h:r):rest) = (Node lr h rr, r:r2) where
(lr, r1) = label ln rest
(rr, r2) = label rn r1
label _ _ = (Leaf, )
lt t = let (r, unused) = label t ([1..]:unused)
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