[Python-ideas] [Python-Dev] What's the status of PEP 505: None-aware operators?

[Serhiy Storchaka]

29.11.17 08:08, Steven D'Aprano пише:
> Perl is hardly the only language with null-coalescing operators -- we
> might better describe ?? as being familiar to C#, PHP, Swift and Dart.
> That's two mature, well-known languages and two up-and-coming languages.

What is the syntax of the ternary operator in these languages?