Re: Add instance Bounded (Ratio a)

Agreed. Moreover, even if we had some magical way to avoid overflow issues, there's no guarantee that maxBound % 1 >= minBound % (-1) or that minBound % 1 <= maxBound % (-1) So I think this is fundamentally doomed. On Sun, Jun 16, 2019, 2:30 PM Eric Mertens wrote:

Ratio only only generally be used with Integer, which isn’t itself an instance of Bounded. This probably wouldn’t be a very useful instance. It has overflow issues with Bounded types like Int for various operations including comparisons.

On Jun 16, 2019, at 10:14 AM, Vanessa McHale wrote:

Signed PGP part

Seems sensible. Out of curiosity, what would this help with? On 6/14/19 6:44 PM, Dannyu NDos wrote:

instance (Integral a, Bounded a) => Bounded (Ratio a) where minBound = minBound % 1 maxBound = maxBound % 1

_______________________________________________ Libraries mailing listLibraries@haskell.orghttp://mail.haskell.org/cgi-bin/mailman/listinfo/libraries

_______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries