RE: [PHP-DEV] [RFC] Using objects as keys

From: Date: Thu, 30 Oct 2014 07:13:27 +0000
Subject: RE: [PHP-DEV] [RFC] Using objects as keys
References: 1 2  Groups: php.internals 
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From: Alexander Lisachenko [mailto:lisachenko.it@gmail.com], Sent: Monday, October 27, 2014 11:18 AM > Hello, internals! > >> The name __hash is not final, I am open to using __toKey instead or any >> reasonable alternative, we may also include a couple of options in the >> vote if that will be a point of disagreement. > > I like this idea with custom hash implementation because spl_object_hash() > is not reliable when objects are quickly created/destroyed, so hashes can > be the same for several different objects. However, will it be better to > introduce an interface for that? For example, Hashable can be a good name > (like Traversable one). Default implementation then can be a simple trait > that will be added later to the concrete class. I like the idea introducing an interface for this functionality, instead of adding a further magic method. But I think anything like "hash" or "hashable" is confusing for users. Maybe something like interface ArrayKeyConvertable { function toArrayKey(); } Christian

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