Re: [RFC][Discuss] Arrow Functions

On Mon, Jan 30, 2017 at 10:55 AM, Levi Morrison <levim@php.net> wrote: > Bob Weinand and I are happy to announce that the [Arrow Functions][1] > RFC is moving into the public discussion phase. We have been > collaborating on this RFC for many months now and finally have a > proposal we are happy to discuss in the open. > > Here is an example of an existing closure: > > function ($x) use ($arr) { > return $arr[$x]; > } > > This RFC proposes syntax and semantics to simplify this common usage to: > > fn($x) => $arr[$x] > > More details are in the RFC. The [implementation][2] currently has no > known issues and is ready for you to download, build and test, which > we encourage you to do. > > We look forward to a productive discussion period and are happy to > answer questions. > > For historical purposes, the revision of this RFC is currently at > [1485798604][3]. > > [1]: https://wiki.php.net/rfc/arrow_functions > [2]: > https://github.com/morrisonlevi/php-src/tree/arrow_functions > [3]: https://wiki.php.net/rfc/arrow_functions?rev=1485798604 Thank you to everyone who has participated in the discussion so far. Several people have asked for examples of type declarations. I have updated the RFC accordingly and also added an example for by-ref parameters and returns. Here are the examples: fn (array $x) => $x fn (): int => 42 fn &(array &$xs) => $xs I have also made some minor improvements to the formatting in various places.