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In-Reply-To: <4B54FC87.8070106@zend.com>
Date: Tue, 19 Jan 2010 10:14:34 +0300
Cc: 'PHP Internals' <internals@lists.php.net>
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Message-ID: <AC8960D7-542B-424A-B2E4-5AE8896DCCC0@gmail.com>
References: <4B54FC87.8070106@zend.com>
To: Stanislav Malyshev <stas@zend.com>
Subject: Re: [PHP-DEV] function call chaining
From: indeyets@gmail.com (Alexey Zakhlestin)


On 19.01.2010, at 3:27, Stanislav Malyshev wrote:

> Hi!
>=20
> I wrote a small patch that enables this kind of syntax in PHP:
>=20
> foo()();
>=20
> What it means is that if foo() returns callable value (which probably =
should be function name or closure) then it would be called. Parameters =
and more than two sets of () work too.
> Of course, this is mostly useful for doing closures, and that was =
primary drive for implementing it - to make working with closures and =
especially function returning closures easier.
> What does not work currently is $foo->bar()() - since it is =
surprisingly hard to tell parser it's not {$foo->bar}()() - which of =
course is not what I want to do.

I like it!

regarding $foo->bar()()=85
is it possible to use precedence rules here? something like:

    ($foo->bar())();


> What do you think? If somebody has better idea btw - maybe make =
something like {foo()}() - and make that work for any expression inside =
{} - that might work too. So, what do you think?

why curly braces?
Parentheses would feel more natural here.

Would be nice if something like this worked too:

    (new Class())->method();