base
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package base
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Multi parameter monad. The second parameter gets unified across all the computation. This is used to encode monads working on a multi parameter data structure like (('a,'b) result).

type ('a, 'e) t
val bind : ('a, 'e) t -> f:('a -> ('b, 'e) t) -> ('b, 'e) t
val map : [ `Define_using_bind | `Custom of ('a, 'e) t -> f:('a -> 'b) -> ('b, 'e) t ]
val return : 'a -> ('a, _) t