Module Let_syntax.Let_syntax
val return : 'a -> ('a, 'b) Core_kernel.Result.t Deferred.t
val bind : ('a, 'e) Core_kernel.Result.t Deferred.t -> f:('a -> ('b, 'e) Core_kernel.Result.t Deferred.t) -> ('b, 'e) Core_kernel.Result.t Deferred.t
val map : ('a, 'e) Core_kernel.Result.t Deferred.t -> f:('a -> 'b) -> ('b, 'e) Core_kernel.Result.t Deferred.t
val both : ('a, 'e) Core_kernel.Result.t Deferred.t -> ('b, 'e) Core_kernel.Result.t Deferred.t -> ('a * 'b, 'e) Core_kernel.Result.t Deferred.t
module Open_on_rhs : sig ... end