[Haskell-cafe] Rose Tree

[Kalman Noel]

Ryan Bloor:
> Data Tree a = Empty | Leaf a | Node a [(Tree a)]

The Leaf constructor seems superfluous to me.  Any (Leaf x) value is equivalent
to (Node x []).  So I rather just have

    data Tree a = Empty | Node a [Tree a]

which will mean less work for your task of writing processing functions, too.

Kalman

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