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/map2gen.v

Created August 26, 2013 19:53
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generalize map2 for ilist
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map2gen.v
Fixpoint map2gen {A B C n} (f : A -> B -> C) (xs : ilist A n) : ilist B n -> ilist C n :=
match xs in ilist _ n return ilist B n -> ilist C n with
| INil => fun _ => INil
| ICons n' x xs' => fun ys => ICons (f x (hd ys)) (map2gen f xs' (tl ys))
end.
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