package ocaml-base-compiler

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Official release 4.12.0

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Authors

Xavier Leroy

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4.12.0.tar.gz

sha256=adc07a3995362403f3cb11085a86354de08e5a7f9eb3c09be7bbcc38a3a26744

doc/stdlib/Stdlib/Callback/index.html

Module `Stdlib.Callback`

Registering OCaml values with the C runtime.

This module allows OCaml values to be registered with the C runtime under a symbolic name, so that C code can later call back registered OCaml functions, or raise registered OCaml exceptions.

val register : string -> 'a -> unit

Callback.register n v registers the value v under the name n. C code can later retrieve a handle to v by calling caml_named_value(n).

val register_exception : string -> exn -> unit

Callback.register_exception n exn registers the exception contained in the exception value exn under the name n. C code can later retrieve a handle to the exception by calling caml_named_value(n). The exception value thus obtained is suitable for passing as first argument to raise_constant or raise_with_arg.