Yes.  The qcon_demo tag is the demarcation of where the code properly compiled for the iPad.

Then I went and did a bunch of stuff that requires GHC 7 and also splits the language out from the iPad part because Visi will run on OS X and in the cloud as well as on the iPad.

You might want to check out https://github.com/dpp/LispHaskellIPad

I wonder if the app is specific iPad. I like to make an iPhone app, the screen is of course too small, but as a test it might be fine.
I don't have access to an iPad.

Ton




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