Since Iavor package is not tree-centric, it'll probably not generate as nice output as you can for real tree-like-data. However, since it works on arbitrary Show instances, it's much more readily usable: It's (almost) a drop-in replacement for show. I find it to be extremely valuable in debugging tasks.

-Levent.

On Fri, Oct 26, 2012 at 5:58 AM, Ivan Lazar Miljenovic <ivan.miljenovic@gmail.com> wrote:

For a project I'm working on, I got sick of writing out trees by hand.
Data.Tree has a drawTree function, but whilst it's better than
nothing, I prefer a more top-down "traditional" approach to drawing
trees.

So I wrote a package to do just that:
http://hackage.haskell.org/package/pretty-tree

(I didn't think to check whether diagrams had capabilities to do so
until after I finished, though in this case I prefer a textual
approach anyway.)

I'm more than happy to consider adding other forms of drawing trees
(though off-hand I can't think of any), or of course you can send me
patches since I'm taking advantage of the nice new shiny hub.darcs.net
(thanks Darcs team!).

I was going to put an example here but it only really comes out nicely
if you're using a monospaced font, so have a look at the Haddock docs
for the module once Hackage builds it (in hindsight, I should probably
have come up with better labels before releasing the package... oh
well :)

--
Ivan Lazar Miljenovic
Ivan.Miljenovic@gmail.com
http://IvanMiljenovic.wordpress.com

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