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In-Reply-To: <5722B01C-A621-4C13-B34B-383B0D9753F9@koalephant.com>
Date: Fri, 3 Feb 2017 21:33:09 -0600
Cc: internals <internals@lists.php.net>,
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To: Stephen Reay <php-lists@koalephant.com>
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Subject: Re: [PHP-DEV] [RFC][Discuss] Arrow Functions
From: aaron@trowski.com (Aaron Piotrowski)


> On Feb 3, 2017, at 9:06 PM, Stephen Reay <php-lists@koalephant.com> =
wrote:
>=20
>=20
>> On 4 Feb 2017, at 07:25, Aaron Piotrowski <aaron@trowski.com> wrote:
>>=20
>> $callback =3D |int|float $x| =3D> $x ** 2;
>=20
> Forget the parser, you're giving my eyes diabetes trying to read that.

I absolutely agree that it's terrible=E2=80=A6 the point is that types =
(even potential future union types) can be used with short closures, but =
it certainly doesn't mean they should be. I don't think confusion with a =
non-existent and non-recommended way of coding should be a reason =
against a particular syntax.

> As has been said before, PHP is relatively verbose compared to other =
languages. That makes it slightly more characters to type, but it also =
makes it absolutely clear what is happening.

Using `function` IMO makes it more likely to confuse a short closure =
with a regular closure. Reusing the `function` keyword with different =
semantics may result in some confusion.

> As Niklas said, all ambiguity/clarity issues are solved by using =
"function", at the cost of 6 characters.
>=20
> Suggesting that a search for arrow functions will be easier with =
<insert random character here> and then using grep (which could also =
easily match arrow functions using "function") as your example search =
seems odd to me.

I never suggested this, Bj=C3=B6rn Larsson did. Any of the possibilities =
mentioned in this thread could easily be searched.

Regards, Aaron Piotrowski