Re: Inconsistent Memory Management Rules
Re: Inconsistent Memory Management Rules
- Subject: Re: Inconsistent Memory Management Rules
- From: "John C. Randolph" <email@hidden>
- Date: Sun, 13 Apr 2003 21:32:18 -0700
On Sunday, April 13, 2003, at 11:54 AM, David Blanton wrote:
I have an example that contradicts the rules I have read for Cocoa
memory
management.
One rule as I understand it is "If you -alloc, then you -release (or
-autorelease)"
I have code that crashes when using this rule as follows:
NSString * string = [[NSString alloc]init];
string = [string stringByAppendingString:@"steve jobs"];
'string' is a pointer. In the line of code above, you've discarded its
previous value (the address of the object returned by your alloc/init
pair), and assigned it the address of an autoreleased string (returned
from -stringByAppendingString:)
-jcr
John C. Randolph <email@hidden> (408) 974-8819
Sr. Cocoa Software Engineer,
Apple Worldwide Developer Relations
http://developer.apple.com/cocoa/index.html
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