Can an NSString be reused like this:
NSString *string = @"first value";
NSLog(string);
string = @"second value";
NSLog(string);
This works when tested, but is it proper coding?
Thanks.
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15answers:
1
A:
Yes, your example is totally fine. What is your concern about it being 'improper'?
Edit: Strictly speaking it is probably safer to use:
NSLog(@"%@", string);
Instead of just logging the string directly. I don't think that's what you were asking, though.
Carl Norum
2010-09-05 01:09:07
My concern is that it's not a NSMutableString. Does reassigning NSString with a different length string corrupt anything in memory?
Jim
2010-09-05 01:16:00
@Jim, you're not modifying any strings in your code; just a pointer to a string.
Carl Norum
2010-09-05 01:35:02
Then what happens to "first value"? Does it stay in memory or does it get disposed of? Should I release it?
Jim
2010-09-05 02:10:23
@Jim, it stays in memory - it's a constant string, so there's nothing you can do about it. You don't need to release it since you didn't retain it.
Carl Norum
2010-09-05 03:34:38
Great, thank you.
Jim
2010-09-05 14:18:00