On Tue, Mar 5, 2019 at 6:42 PM Jimmy Girardet <i...@netc.fr> wrote: > > Indeed the "obscure" argument should be thrown away. > > The `|` operator in sets seems to be evident for every one on this list > but I would be curious to know how many people first got a TypeError > doing set1 + set2 and then found set1 | set2 in the doc. > > Except for math geek the `|` is always something obscure. >
Interesting point. In Japan, we learn set in high school, not in university. And I think it's good idea that people using `set` type learn about `set` in math. So I don't think "union" is not only for math geeks. But we use "A ∪ B" in math. `|` is borrowed from "bitwise OR" in C. And "bitwise" operators are for "geeks". Although I'm not in favor of adding `+` to set, it will be worth enough to add `+` to set too if it is added to dict for consistency. FWIW, Scala uses `++` for join all containers. Kotlin uses `+` for join all containers. (ref https://discuss.python.org/t/pep-584-survey-of-other-languages-operator-overload/977) Regards, -- Inada Naoki <songofaca...@gmail.com> _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
