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Logo IO System

Library of Unix effects for Coq. See also Coq.io.

build status

Require Import Io.All.
Require Import Io.System.All.
Require Import ListString.All.

Import C.Notations.

Definition hello_world (argv : list LString.t) : C.t System.effect unit :=
  System.log (LString.s "Hello world!").

Install

Using OPAM for Coq:

opam repo add coq-released https://coq.inria.fr/opam/released
opam install coq-io-system

Documentation

See http://coq.io/.

Extraction

To run a program you can extract it to OCaml. Do:

Definition main := Extraction.launch hello_world.
Extraction "main" main.

You can now compile and execute main.ml:

ocamlbuild main.native -use-ocamlfind -package io-system
./main.native