On Sun, 17 Apr 2022 at 02:23, David Mertz, Ph.D. <david.me...@gmail.com> wrote: > One thing I do find a bête noire is the silly claim, that Chris repeats, that > inheritance expresses "Is-A" relationships. It was torture in the 1990s > hearing about vehicles and trucks and sedans as if that had something to do > with programming. I never "got" OOP for at least 5 years later than I should > have because of those horrible Linnaean metaphors. >
A button IS a widget. A horizontal box IS a box. A box IS a container. A container IS a widget. Class hierarchies in graphical systems are just as much based on those is-a relationships as any of those "horrible metaphors" you may have come across, and they are absolutely to do with programming. Just because you had a bad teacher, that doesn't mean the concepts are wrong. ChrisA _______________________________________________ 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/AXY5ZJORW2CWBCCH5H7MQ6HULUG4DPRT/ Code of Conduct: http://python.org/psf/codeofconduct/
