Allow patterns in function params and add hints on shape coercion #67
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((x, y) : I * J) -> C x y
((t, s) : I * J | psi t /\ phi s) -> X t s
in function types, e.g.
{a : A} -> B a
in functions from shapes:
in parameters and lambda arguments
in function types, e.g.
in params and lambdas, e.g.
The fix allows arbitrary terms in function types, and converts terms to patterns.
Note that parameters are desugared before hints/deprecations are checked, so messages do not correspond well to input (yet).