package eio

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in-package search v0.2.0

Effect-based direct-style IO API for OCaml

Install

Dune Dependency

github.com Readme Changelog ISC License Edit opam file Versions (18)

Authors

Maintainers

A

anil@recoil.org

Sources

eio-1.0.tbz

sha256=da260d9da38b3dde9f316652a20b13a261cf90b85a2498ac669b7d564e61942d

sha512=5886e1159f48ede237769baa1d8b5daafa0310e4192d7fe0e8c32aef70f2b6378cef72d0fbae308457e25d87a69802b9ee83a5e8f23e0591d83086a92d701c46

doc/eio/Eio/Exn/Backend/index.html

Module `Exn.Backend`Source

Extensible backend-specific exceptions.

Sourcetype t = ..

Sourceval show : bool ref

Controls the behaviour of pp.

Sourceval register_pp : (Format.formatter -> t -> bool) -> unit

register_pp pp adds pp as a pretty-printer of backend errors.

pp f err should format err using f, if possible. It should return true on success, or false if it didn't recognise err.

Sourceval pp : t Fmt.t

pp behaves like pp except that if display of backend errors has been turned off (with show) then it just prints a place-holder.

This is useful for formatting the backend-specific part of exceptions, which should be hidden in expect-style testing that needs to work on multiple backends.