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Implement JSON typeclass for polymorphic variants.
author Edward Z. Yang <ezyang@mit.edu>
date Wed, 02 May 2012 11:47:37 -0400
parents a6730c3cfea7
children f55f66c6fdee
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val numFields : r ::: {Type} -> folder r -> $r -> int

val mem : a ::: Type -> ns ::: {Unit} -> eq a -> folder ns -> a -> $(mapU a ns) -> bool
(* Is a value found in a record? *)

val equal : ts ::: {Type} -> $(map eq ts) -> folder ts -> $ts -> $ts -> bool
(* Are two records equal? *)