Re: class_respondsToSelector() in runtime.h?
Re: class_respondsToSelector() in runtime.h?
- Subject: Re: class_respondsToSelector() in runtime.h?
- From: Jonathon Kuo <email@hidden>
- Date: Thu, 1 Jul 2010 10:30:09 -0700
On Jul 1, 2010, at 9:49 AM, Kyle Sluder wrote:
> On Jul 1, 2010, at 9:42 AM, Jonathon Kuo <email@hidden> wrote:
>
>> On Jul 1, 2010, at 7:56 AM, Matt Neuburg wrote:
>>
>>> "Instance methods defined in a root class can be performed both by instances
>>> and by class objects. Therefore, all class objects have access to the
>>> instance methods defined in the root class."
>>
>> Not that it would generally be USEFUL to do so, since the purpose of an instance is to hold instance variable values; a class object accessing instance variables through an instance method would come up with uninitialized ivar values, no?
>
> They are instances of the root class, so they have all the root class instances variables, of which there is precisely one: isa.
Interesting... so what happens at runtime if a class object invokes an instance method that accesses instance variables? Exception? Assertion? Seg fault?
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