Proposal: Better power for Rational
simonpj at microsoft.com
Sun Sep 26 14:39:39 EDT 2010
If the change is adopted, could the design rational (including why Rational-only) be included as a comment? It's so easily lost!
| -----Original Message-----
| From: libraries-bounces at haskell.org [mailto:libraries-bounces at haskell.org] On Behalf
| Of Ian Lynagh
| Sent: 25 September 2010 16:03
| To: libraries at haskell.org
| Subject: Re: Proposal: Better power for Rational
| On Sat, Sep 25, 2010 at 03:36:42PM +0200, Daniel Fischer wrote:
| > I'm not principally against changing that behaviour, but changing the
| > results of functions is a big undertaking versus just improving
| > performance.
| Oh, but as this is done with a rule rather than a class method, it would
| make the result non-deterministic, depending on whether the rule fires.
| So yes, restricting it to Rational sounds like the right thing to do.
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