[Haskell-cafe] Fractional/negative fixity?
haskell at henning-thielemann.de
Wed Nov 8 08:36:22 EST 2006
On Wed, 8 Nov 2006, Bulat Ziganshin wrote:
> Hello Nicolas,
> Wednesday, November 8, 2006, 1:25:23 AM, you wrote:
> > prec ?? < $
> > over-specification). You want ?? to bind more tightly than does $;
> > that's exactly what this approach would let you specify.
> and how then compiler will guess that is relational priority of this
> operator comparing to '$!' ? :)
(What might the smiley mean?)
It could not guess it, and this is good! However, if in the Prelude it is
defined, that ($) and ($!) have the same precedence, then the
compiler could derive automatically that prec ?? < $!.
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