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You can reach the person managing the list at beginners-ow...@haskell.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Beginners digest..." Today's Topics: 1. Fractional of DiffTime (Baa) ---------------------------------------------------------------------- Message: 1 Date: Fri, 18 Aug 2017 12:35:19 +0300 From: Baa <aqua...@gmail.com> To: The Haskell-Beginners Mailing List - Discussion of primarily beginner-level topics related to Haskell <beginners@haskell.org> Subject: [Haskell-beginners] Fractional of DiffTime Message-ID: <20170818123519.06c26706@Pavel> Content-Type: text/plain; charset=US-ASCII Hello, List! DiffTime type has "closed" on itself operation "/". So, (/) :: DiffTime -> DiffTime -> DiffTime But from a physics point of view, it doesn't make sense. When you divide hours by hours you get "dimensionless" value, not units (hours) but simple number (I'm not sure how it's named in English). And it's true for any physical values: [m/s] : [m/s] = [Int] (not [m/s] sure) Is it right to define CLOSED "/" for such set like DiffTime? === Best regards, Paul ------------------------------ Subject: Digest Footer _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners ------------------------------ End of Beginners Digest, Vol 110, Issue 18 ******************************************