Ben Rudiak-Gould wrote:
> I'm surprised that no one has mentioned showsPrec and readsPrec.
> Anything more complicated than negative fixities would require their
> interfaces to be changed.
That's a fine point.
So, as I see it the situation with this precedence stuff is that there were
several vocal complaints about the proposal to extend precedences to allow
negative and fractional precedence values, and not many proponents. The point
about showsPrec/readsPrec means that the extension is not quite as minimal as
we thought, and would probably break some existing code.
Alternative schemes based on constructing a partial order between operators are
being proposed, but these are out of the question for Haskell'.
So the default option is to do nothing, leaving us with the devil we know.
It's hard to guage the opinion of the community on these things, so if you
strongly object to doing nothing, please speak up.
Cheers,
Simon
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