I don't see the redundancy? In my proposal the original proposed symbol `?` is switched with `!`. So it shouldn't throw any error?
On Wed, Aug 19, 2015 at 4:42 PM, Isiah Meadows <[email protected]> wrote: > -1 for the `!` idea. It feels redundant to me, since if you try calling an > undefined value, it'll throw errors at you. It doesn't seem to insure > anything extra beyond current behavior. > > On Wed, Aug 19, 2015, 02:27 Tingan Ho <[email protected]> wrote: > >> One thing to keep in mind is that with prefix operator `?a.b` will also >> let people move back and forth with their caret. Since most people type the >> identifier first and then the operator. So they type `a` first and the move >> the caret in front of `a` and type `?` and then move the caret back to the >> last position and then type `.b`. This has been a big problem in typing >> type assertions in TS which had a prefix operator. They later introduced >> the `as` operator which is a postfix operator. >> >> What about `a!?.b` since semantically the symbol `!` has a meaning of >> non-nullable in JSDoc[1]. So the semantics of `a!?.` is `is it not null >> then the accessor ...`. >> >> Or just `a!.b`? >> >> [1]: Non-nullable type — http://usejsdoc.org/tags-type.html >> >> -- >> Sincerely, >> >> Tingan Ho >> @tingan87 <https://twitter.com/tingan87> >> _______________________________________________ >> es-discuss mailing list >> [email protected] >> https://mail.mozilla.org/listinfo/es-discuss >> > -- Sincerely, Tingan Ho @tingan87 <https://twitter.com/tingan87>
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