Invariant.Via_invmap
module Req : Preface_specs.Invariant.WITH_INVMAP
type 'a t = 'a Req.t
The type held by the Invariant.
Invariant
val invmap : ('a -> 'b) -> ('b -> 'a) -> 'a t -> 'b t
Transform an 'a t into an 'b t given a transformation from 'a to 'b and one from 'b to 'a.
'a t
'b t
'a
'b