[m-users.] Mercury Crash Course

[emacstheviking]

>
>
> >> - DCG syntax
> >
> > You can probably skip those, as they have been all but superseded by
> > state variables.
>
> What do you think about marking DCG syntax as deprecated and remove it
> from the language after a while?
>
>
Can somebody explain how state variables supercede DCG sytax please...I
vaguaely get the destructive in / unique out concept but I am confused now!
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