> On Mar 5, 2019, at 2:13 PM, Greg Ewing <greg.ew...@canterbury.ac.nz> wrote: > > Rhodri James wrote: >> I have to go and look in the documentation because I expect the union >> operator to be '+'. > > Anyone raised on Pascal is likely to find + and * more > natural. Pascal doesn't have bitwise operators, so it > re-uses + and * for set operations. I like the economy > of this arrangement -- it's not as if there's any > other obvious meaning that + and * could have for sets.
The language SETL (the language of sets) also uses + and * for set operations.¹ For us though, the decision to use | and & are set in stone. The time for debating the decision was 19 years ago.² Raymond ¹ https://www.linuxjournal.com/article/6805 ² https://www.python.org/dev/peps/pep-0218/ _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
