[Ethan Furman <et...@stoneleaf.us>] > "case _:" is easy to miss -- I missed it several times reading through the > PEP.
As I said, I don't care about "shallow first impressions". I care about how a thing hangs together _after_ climbing its learning curve - which in this case is about a nanometer tall ;-) You're not seriously going to maintain that you're struggling to grasp the meaning of "case _:" now, right? > Huh. I would consider "case _:" to be the wart, especially since "case > default:" > or "case anything:" or "case i_dont_care:" all do basically the same thing > (although > they bind to the given name, Having climbed the trivial learning curve, only a deliberate wise ass would code garbage like "case i_dont_care:". I don't care about them either. The one obvious way to do it has already been made clear to them. You may as well, e.g., complain that there's nothing to stop a wise ass from writing "-5+6" where everyone else writes "+1". > while _ does not bind to anything, but of what practical importance is that?) > . One obvious way to do it is of major practical importance. > ... > Besides which, if we use "|" instead of "or" then we can't later allow more > general expressions. Good! The PEP is quite complicated enough already. But if you want to pursue this seriously, you're going to have your work cut for you to explain why "|" is more sacred than "or" with respect to "more general expressions". If you don't want to preclude anything, then you need to invent syntax that has no meaning at all now. >> ".NAME" grated at first, but extends the idea that dotted names are >> always constant value patterns to "if and only if". So it has mnemonic >> value. > How do you get from "." to "iff" ? See reply to Glenn. Can you give an example of a dotted name that is not a constant value pattern? An example of a non-dotted name that is? If you can't do either (and I cannot)), then that's simply what "if and only if" means. _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/YGTDPCASYUQYCMU5PS2S5YO7DBNDYYWP/ Code of Conduct: http://python.org/psf/codeofconduct/
