From: wren ng thornton <wren@freegeek.org>
Subject: Re: [Haskell-cafe] Building a tree?
To: haskell-cafe@haskell.org
Date: Wednesday, June 10, 2009, 8:13 PM

michael rice wrote:
> Here's a function from Data.Tree:
>
> unfoldTree :: (b -> (a, [b])) -> b -> Tree a
> Build a tree from a seed value
>
> Could someone please give me a brief example of usage.

    Data.Tree> let t = unfoldTree (\i -> (show i, [i`div`2..i-1]))
    Data.Tree> putStr . drawTree $ t 8

-- Live well,
~wren
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe