Re: [OBJC newbie] - Intance variable becomes 'invalid'
Re: [OBJC newbie] - Intance variable becomes 'invalid'
- Subject: Re: [OBJC newbie] - Intance variable becomes 'invalid'
- From: Robert Walker <email@hidden>
- Date: Wed, 31 May 2006 14:58:32 -0400
Graham,
Study this guide very closely. It will explain, hopefully, all you
need to know about memory management in Cocoa/ObjC:
http://developer.apple.com/documentation/Cocoa/Conceptual/MemoryMgmt/
index.html
On May 31, 2006, at 2:51 PM, Graham wrote:
Just learning OBJC...
I have a class with an NSString * instance variable.
Class has two methods, method a sets a value into the string, when
method b is called and tries to access the string it crashes my
app. gdb says the string instance is 'invalid'.
How can an instance variable become invalid? What does it even mean?
I suspect that since OBJC uses pointers everywhere that the
instance got stamped on somehow?
I have been living in the safe world of Java for too long I fear.
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