[mercury-users] Passing a multi-mode higher order predicate

[Julian Fondren]

On Sun, Feb 5, 2012 at 1:46 AM, Julian Fondren <ayrnieu at gmail.com> wrote:
>  :- pred numbers(int::out) is det.

Obvious:

  :- pred numbers(int::out) is multi.

>  :- pred foo(producer::out(producer)) is det.

Perhaps less obvious:

  :- pred foo(producer(int)::out(producer)) is det.

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