On Sat, Mar 16, 2019 at 09:04:22PM +1300, Greg Ewing wrote: > Another random thought about this: Mathematicians use addition as a > metaphor for quite a range of different things, but they tend to only > use the symbols ∪ and ∩ for actual sets, or things that are very > set-like. So maybe that's an argument for using '+' rather than '|' > for dict merging.
If one views an ordered dict as an assoc list, '+' would mean prepending the new values to the existing ones. If one views an unordered dict as a set of ordered pairs, '|' would make sense. Stefan Krah _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
