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Date: Mon, 09 Aug 2010 13:44:03 +0200
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Subject: Re: [PHP-DEV] Indexing an array
From: mathieu.suen@easyflirt.com ("mathieu.suen")

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On 08/06/2010 04:42 PM, Gustavo Lopes wrote:
> On Fri, 06 Aug 2010 15:33:18 +0100, mathieu.suen 
> <mathieu.suen@easyflirt.com> wrote:
>
>> Hi,
>>
>> For now you can only index an array using a scalar type or a string.
>> Is there some rfc or work going on to enlarge the possibility so that it
>> is possible to have some other object like:
>>
>> - closure
>> - object
>> - etc.
>
> I think the problem with that is how you are going to generate the 
> hash of arbitrary objects in order to store them in the hash table. 
> It's not like all PHP objects have a hashCode() method.

IMHO It should.

>
> So the only plausible option would be to attribute the same hash to 
> all and the test all for equality on an insertion with a new key or in 
> the worst case scenario for updates and reads.
>

Since php is not referentially transparent I would rather use identity 
unless object can redefine equality.

-- Mathieu Suen

	


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