On 19/08/2014 10:20, Magicloud Magiclouds wrote:

Hi,

   I think a structure viewing in editor could be very help for long
file or big project. Something like java/c# IDEs do.

   But I could not find a hint on google. Any suggestions?

Not in emacs, but there are several suggestions in this stackoverflow answer:

http://stackoverflow.com/questions/7427094/generate-diagrams-for-haskell-code

I've used graphmod before but I wasn't aware of sourcegraph, which seems to include a lot more.
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