[m-dev.] for review: add ++ and -- operators

[Peter Ross]

On Mon, Aug 07, 2000 at 09:27:06AM +1000, David Overton wrote:
> On Fri, Aug 04, 2000 at 08:59:22PM +1000, Michael Day wrote:
> > Add the line:
> > 
> > ops__op_table("++", after, yfx, 500).           % Mercury extension
> > 
> 
> Hi Michael,
> 
> You may want to consider making `++' right-associative (i.e. xfy)
> since, as Peter Schachte has pointed out, this is more efficient for
> stringing multiple appends together.
> 
I suggest that you adopt that predencence and associativity of ++ that
haskell uses.

Pete
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