In article <51590a2b$0$30000$c3e8da3$54964...@news.astraweb.com>, Steven D'Aprano <steve+comp.lang.pyt...@pearwood.info> wrote:
> Concrete examples of transitive relations: greater than, equal to, less > than and equal to. Will Python 4 implement "less than and equal to"? :-) [Warning: topic creep] Well, they are transitive over certain domains. Or, perhaps, a better way to say it is they are transitive according to their traditional mathematical definitions. But, computer languages don't always follow those. I used to work with a guy who was originally a math major. He used to always complain about things like: s = "foo" + "bar" because addition is supposed to be commutative. But, yeah, I know what you're saying that "transitive" applies to relations, not to operators. Although, of course, in some languages, relations *are* operators. There's that pesky math vs. programming language dichotomy again. -- http://mail.python.org/mailman/listinfo/python-list
