Re: Synthesized instance variables
Re: Synthesized instance variables
- Subject: Re: Synthesized instance variables
- From: Frank Illenberger <email@hidden>
- Date: Thu, 12 Mar 2009 17:54:07 +0100
And what prevent you to simply declare the ivar in the interface
instead of letting the compiler generating it ?
I second Andreas. For most cases, the correct place to declare
instance variables should be the .m file as they are an implementation
detail and not part of the contract with the outside world using the
class. The feature of non-fragile instance variables of the modern ABI
should make this dream possible. Synthesizing already takes place on
the .m side but I also do not know how to gain access to the actual
synthesized instance variable in a custom getter. Using
objc_getInstanceVariable is not a good alternative as it is far to
slow for being used in an on-demand getter. I think, Andreas does not
care whether it is theoretically possible for the outside world to
access the memory of his instance variables. He merely does not want
to cite them is the contract.
The Objective-C release notes mention the symbol format OBJC_IVAR_
$_ClassName.IvarName for ivars but the compiler does not seem to
understand it.
Does anybody know a way to access synthesized instance variables
without using the synthesized getter methods?
And why isn't there a way to explicitly declare instance variables in
the .m file for the new runtime?
Cheers
Frank
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