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Is the "id" type an immovable pointer? Or a movable handle

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Is the "id" type an immovable pointer? Or a movable handle

Subject: Is the "id" type an immovable pointer? Or a movable handle
From: Ken Tozier <email@hidden>
Date: Wed, 31 Jan 2007 18:06:56 -0500

Hi

I'm creating a bunch of NSInvocations and want to store them in a dictionary with a key that uniquely identifies the invocation target. I checked the "Objective C runtime" documentation and it doesn't appear that NSObjects have unique identifiers. I thought of adding a uuid property to a base class but uuids are 128 bytes so I was wondering, if objects don't move around in memory after allocation, I could just package the id to an NSNumber and use that for the key.

Anyone know if ids are pointers or handles?

Thanks

Ken
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