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Date: Wed, 15 Jul 2015 22:19:53 +0200
Message-ID: <CAEPJduk_1CbaxeVXr6LMZLohPizAng5c8aeJGTCx2sErk67iJA@mail.gmail.com>
To: Rowan Collins <rowan.collins@gmail.com>
Cc: Levi Morrison <levim@php.net>, Julien Pauli <jpauli@php.net>, 
	PHP Internals <internals@lists.php.net>
Content-Type: multipart/alternative; boundary=047d7bf10a74741b77051aefad6c
Subject: Re: [PHP-DEV] Consolidation of Traversable and array operations
From: kontakt@beberlei.de (Benjamin Eberlei)

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On Wed, Jul 15, 2015 at 9:53 PM, Rowan Collins <rowan.collins@gmail.com>
wrote:

> On 15 July 2015 20:39:05 GMT+01:00, Levi Morrison <levim@php.net> wrote:
> >Do note that the union types RFC would also alleviate some of this
> >pain for user-land functions, since `array | Traversable` would cover
> >the required access pattern. I think this is a superior approach
> >myself, but I may be a bit biased as I am authoring that proposal:
> >https://wiki.php.net/rfc/union_types
>
> I like the idea of union types in general, but have always felt that a
> typehint of Traversable should accept arrays as a matter of course. The
> only thing such a typehint guarantees is that foreach will work (there are
> no methods defined that can be called directly), and an array meets that
> condition. The only difference I can see is in the passing / mutability
> behaviour of objects vs non-objects.
>

But instanceof and anything related to Reflection or get_class or relevant
code will fail on array.

>
> Regards,
> --
> Rowan Collins
> [IMSoP]
>
>
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