[m-rev.] Re: for review: parsing_utils improvements

[Zoltan Somogyi]

On 29-Sep-2009, Ian MacLarty <maclarty at csse.unimelb.edu.au> wrote:
> Another compromise could be to set a flag in the src that indicates
> whether the mutable should be updated at all.  If you ran the parser
> outside the parse/4 predicate then the mutable would simply never be
> updated.

In some cases, testing whether you should do something is as expensive
as just doing it.

Zoltan.
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