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Date: Mon, 19 Jun 2017 21:45:29 +0200
Message-ID: <CADqTB_hB1ifmXu4VO6Z4A3gN=2AF_PU4C8yCYXz8QN6zZ_k=6w@mail.gmail.com>
To: Levi Morrison <levim@php.net>
Cc: Ilija Tovilo <ilija.tovilo@me.com>, =?UTF-8?Q?Bj=C3=B6rn_Larsson?= <bjorn.x.larsson@telia.com>, 
	Fleshgrinder <php@fleshgrinder.com>, PHP internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary="94eb2c1a336e9cee470552556092"
Subject: Re: [PHP-DEV] [RFC]Discuss] Syntax for Arrow Functions
From: rasmus@mindplay.dk (Rasmus Schultz)

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Or maybe it'll look okay if you format the code?

    $things->forEach({$v =3D> {
        foo($v);
        bar($v);
    }});

Still looks kinda crazy with the closing "}})" though...


On Mon, Jun 19, 2017 at 9:43 PM, Rasmus Schultz <rasmus@mindplay.dk> wrote:

> I actually like this syntax, but what would it look like for
> multi-statement closures?
>
> A nested set of curly braces around the body would look pretty messy.
>
>     $things->forEach({$v =3D> { foo($v); bar($v); }});
>
>
> On Mon, Jun 19, 2017 at 4:43 PM, Levi Morrison <levim@php.net> wrote:
>
>> On Sun, Jun 18, 2017 at 1:44 PM, Ilija Tovilo <ilija.tovilo@me.com>
>> wrote:
>> > Sorry, I wasn=E2=80=99t aware of that.
>> >
>> > What do you think of the Ruby/Rust style syntax that Levi proposed a
>> while back?
>> >
>> > $someDict
>> >     ->map(|$v| $v * 2)
>> >     ->filter(|$v| $v % 3);
>> >
>> > This one has a few advantages:
>> >
>> > 1. It has syntax (a lot of) developers are already familiar with
>> > 2. It has no ambiguities and is fully backward compatible
>> > 3. It=E2=80=99s the shortest of all options available (two `|` charact=
ers and
>> one space)
>>
>> We determined that the arrow between the parameters and the expression
>> would still be required. Given this limitation I think this syntax is
>> seviceable:
>>
>>     $someDict
>>         ->map({$v =3D> $v * 2})
>>         ->filter({$v =3D> $v % 3});
>>
>> Sometime this week I intend to start another thread that narrows us
>> down to two choices.
>>
>
>

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