package ocaml-compiler

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Official release of OCaml 5.5.0

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dune-project

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ocaml.org Edit opam file Versions (17)

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ocaml-5.5.0.tar.gz

sha256=c018052c8264a3791a8f54f84179e6bcc78ed82eb889bacc2773df445259aed3

doc/compiler-libs.common/Type_immediacy/index.html

Module `Type_immediacy`

Immediacy status of a type

type t =

| Unknown
(*
We don't know anything
*)
| Always
(*
We know for sure that values of this type are always immediate
*)
| Always_on_64bits
(*
We know for sure that values of this type are always immediate on 64 bit platforms. For other platforms, we know nothing.
*)

module Violation : sig ... end

val coerce : t -> as_:t -> (unit, Violation.t) result

coerce t ~as_ returns Ok () iff t can be seen as type immediacy as_. For instance, Always can be seen as Always_on_64bits but the opposite is not true. Return Error _ if the coercion is not possible.

val of_attributes : Parsetree.attributes -> t

Return the immediateness of a type as indicated by the user via attributes