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Re: [mercury-users] uniqueness

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 Subject: Re: [mercury-users] uniqueness
From: Michael Day (mikeday@corplink.com.au)
Date: Fri Dec 01 2000 - 13:27:01 EST

> :- pred pack(a, b, c, structure).
> :- mode pack(di, di, di, uo) is det.
>
> pack(A, B, C, s(A, B, C)).

Oh and the inverse of this, unpack, does not appear to suffer from such a
restriction and requires no copy.

Michael

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