Re: [Haskell-cafe] Building a tree?

11 Jun 2009

      Example understood. Thanks.

Is there a module for binary trees?

Michael

--- On Wed, 6/10/09, wren ng thornton  wrote:

From: wren ng thornton 
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
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