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Subclassing NSString?
From: |
Frederic |
Subject: |
Subclassing NSString? |
Date: |
Tue, 02 Jan 2001 01:09:06 +0100 |
Hi,
I need to create NSString which are unique in memory. (I actually need
that for performance reasons).
So I decided to subclass NSString and create a class method
+(id)keyWithString:(NSString*)keyName which
looks first in a hashtable to ensure it returns a singleton.
But when invoking [[MyNSStringSubClass] alloc] initWithString:keyName],
it fails saying:
"subclass ASKey should override
initWithCharactersNoCopy:length:freeWhenDone:"
Is this really necessary and how should I do that?
Thanks in advance,
Frederic
- Subclassing NSString?,
Frederic <=