[mercury-users] partially instantiated data structures

Don Smith dsmith at cs.waikato.ac.nz
Fri Jul 16 13:11:22 AEST 1999

> When would you use partially instantiated data structures (if you
> could) in Mercury? Given that you can't alias free variables, I'm
> interested to know how you would like to use them. Do you have
> specific uses in mind?

I'd use them in DCGs, so that I could incrementally construct a partial
semantic representation or parse tree.  But I suspect that the strong
moding would limit the usefulness of partially instantiated modes (PIMs?),
because the PIM would have to be static.

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