[m-rev.] for review / comment: simplify code in solutions.m

[Paul Bone]

On Tue, Nov 30, 2010 at 10:59:36PM +1100, Julien Fischer wrote:
> 
> Hi,
> 
> I would like opinions as to whether the following diff constitutes an
> acceptable abuse of the promise_equivalent_solutions mechanism.
> (A similar change could be made to get_one_solution etc, in builtin.m
> which would then remove the need for a bunch of foreign_procs.)

Both alternatives (before and after the diff) 'mean' the same thing, that is
that you only care about one (the first) solution.

I'm okay with this change.

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