Re: Mixing Obj-C and C "methods"
Re: Mixing Obj-C and C "methods"
- Subject: Re: Mixing Obj-C and C "methods"
- From: Andy Lee <email@hidden>
- Date: Tue, 30 Jul 2013 11:08:46 -0400
On Jul 30, 2013, at 10:42 AM, Scott Ribe <email@hidden> wrote:
> On Jul 30, 2013, at 8:35 AM, Andy Lee <email@hidden> wrote:
>
>> The only effect, as others have explained, is on scope; if you put the function inside the @implementation and the function has a reference to an instance of MyClass, then it can use myObj->myIvar for direct access to instance variables.
>
> Interesting, did not know that. Not sure I'll ever need it… Plain C is one thing, plain C but with direct access to instance vars?
I think it's subject to the same criticisms as *any* direct access to ivars, although I agree it feels sketchier when done in plain C for some reason.
Which reminds me... instance methods can also directly access the ivars of *other* instances of the same class.
- (void)myMethod
{
MyClass *otherInstance = [[MyClass alloc] init];
NSLog(@"%@", otherInstance->myIvar);
}
--Andy
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