package eio

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eio
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eio.mock
- Eio_mock
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eio.unix
- Eio_unix
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eio.utils
- Eio_utils
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Eio resources backed by an OS file descriptor.

type t = < fd : Fd.t >

Resources that have FDs are sub-types of t.

val fd : < t.. > -> Fd.t

fd t returns the FD being wrapped by a resource.

type Eio.Generic.ty +=

| FD : Fd.t Eio.Generic.ty
(*
Resources that wrap FDs can handle this in their probe method to expose the FD.
*)

val fd_opt : Eio.Generic.t -> Fd.t option

fd_opt t returns the FD being wrapped by a generic resource, if any.

This just probes t using FD.