Folks,
I have been looking at the code for the "Arrows for invertible
programming" paper (http://www.cs.ru.nl/A.vanWeelden/bi-arrows/) and
I have a question about syntax. ghci surely does not like it.
What does this mean and how do I make it compile?
mapl{|a, b|arr|} :: (mapl{|a, b|arr|}, ArrowChoice arr, BiArrow arr)
=> arr a b
Thanks, Joel
--
http://wagerlabs.com/
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