On 16/06/2019 03:34, Guido van Rossum wrote:
I don't actually know how viable this proposal is, but given that it's being debated at some length, I'd like to put in my opinion that *if* we're going to define an operator that's (roughly) synonymous with issubclass(), it should be '<:', which is used in other languages (e.g. Scala) and notational systems (https://en.wikipedia.org/wiki/Subtyping). Overloading '<=' would be easier to implement, but would also cause enough confusion that I think we should avoid it at all cost.
I rather strongly disagree. We are describing a fairly standard incomplete ordering, which makes the comparison operators completely appropriate. Adding new syntax for something that doesn't need it is the thing likely to cause confusion.
-- Rhodri James *-* Kynesim Ltd _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/6RNW2SFNKGF53CIZGQXJ2LQG7OHD4WLO/ Code of Conduct: http://python.org/psf/codeofconduct/
