Re: limits of the generic
Jeff Greif wrote: > > I think you've hit the nub of this issue. We expect '+' to be commutative, > associative, and have additive inverses. Except for people who also expect things like $greeting = "Hello" + "World"; to work :-) But I like where you're going with this -- coming up with a list of algebraic properties that the various operations on dates, times, and durations should satisfy is a very good way to proceed. --Joe English jenglish@f...
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