On Wed, Apr 20, 2016 at 11:55 AM, Jesse Schalken <m...@jesseschalken.com> wrote: > I read the RFC and it all sounds good to me. I appreciate the care taken to > ensure method compatibility rules are correct, a smooth interop with =null, > and to consider impact on union types if added later (? just becomes sugar). > > I'm not sure if it's been mentioned or not, but the position of the ? has > impact on the ability to add a foo[] shorthand for generic arrays. Namely, > if the ? is at the start, then the syntax becomes ambiguous. > > string[]? (nullable array of strings) > > string?[] (array of nullable strings) > > ?string[] (ambiguous, need to consult precedence rules and/or use brackets) > > > I'm not sure how HHVM/Hack deals with that, or if it even has the foo[] > shorthand.
You would write `array<?string>`; Hack doesn't have a short-hand syntax. -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
