Existential Operator / Null Propagation Operator

Kevin Smith zenparsing at gmail.com
Wed Aug 19 13:24:04 UTC 2015

> What about `a!?.b` since semantically the symbol `!` has a meaning of
> non-nullable in JSDoc[1].

"!" in this context typically means non-optional, or "throw if the value is
nill".  See Swift for example.

Or just `a!.b`?

Same thing.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20150819/32095f85/attachment.html>

More information about the es-discuss mailing list