Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:65952
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: error (pb1.pair.com: domain strojny.net from 46.4.40.248 cause and error)
Content-Type: text/plain; charset=windows-1252
Mime-Version: 1.0 (Mac OS X Mail 6.2 \(1499\))
In-Reply-To: <3EBB0AF2-A114-4652-806B-C50DD8F9557D@inviqa.com>
Date: Tue, 19 Feb 2013 14:56:15 +0100
Cc: PHP Internals <internals@lists.php.net>
Content-Transfer-Encoding: quoted-printable
Message-ID: <614856A4-40E1-47B0-B520-D73753D59C29@strojny.net>
References: <CAESVnVo1z2RA=87GjJa9onW-i91wW_fQ=unED=bDK=LmrKwJ=g@mail.gmail.com> <CADq_CxqBXzcippi6RynuZDH0b5Fjgc5WN9i6+46KZPPSpV-JRQ@mail.gmail.com> <8490FC41-2696-4948-83A1-3931674183B0@gmail.com> <alpine.DEB.2.02.1302191317590.5054@whisky.home.derickrethans.nl> <3EBB0AF2-A114-4652-806B-C50DD8F9557D@inviqa.com>
To: Marcello Duarte <mduarte@inviqa.com>
Subject: Re: [PHP-DEV] [RFC] Short syntax for anonymous functions
From: lars@strojny.net (Lars Strojny)

Hi Marcello,

Am 19.02.2013 um 14:51 schrieb Marcello Duarte <mduarte@inviqa.com>:

> Thanks for the feedback. I get most people here don't appreciate the =
value of the feature.
>=20
> I can understand that If you haven't tried to write a tool like =
capistrano, rspec, chef, puppet, etc, etc in PHP you probably won't see =
much value in implementing such things.
>=20
> On 19 Feb 2013, at 13:19, Derick Rethans wrote:
>> On Tue, 19 Feb 2013, Marcello Duarte wrote:
>>=20
>>> Inspired by Sara, here is another RFC, I finally got around to =
draft:
>>>=20
>>> https://wiki.php.net/rfc/short-syntax-for-anonymous-function

I don=92t like the syntax, but the proposal in general. If you compare =
PHPs syntax to various others, it is indeed clumsy.

Python:
map(lambda v: v * 2, [1, 2, 3])

Ruby:
[1, 2, 3].map{|x| x * 2}

Scala:
List(1, 2, 3).map((x: Int) =3D> x * 2)

PHP:
array_map(function ($x) {return $x * 2;}, [1, 2, 3]);

So even a statically typed language like Scala is shorter and better to =
read. A good improvement would be implicit return and getting rid of the =
function keyword.

array_map(($x): $x * 2;, [1, 2, 3]);

But this RFC should come with a patch, otherwise we are discussing =
things that aren=92t necessarily easy to implement.

cu,
Lars=