Le 24 avr. 09 à 10:50, Graham Cox a écrit :
On 24/04/2009, at 6:44 PM, Jean-Daniel Dupas wrote:
NSMutableDictionary *newThing2 = [newThing mutableCopy];
[newThing2 setObject:foo forKey:bar];
This doesn't copy the contents of the dictionary, it only makes a
mutable copy of the dictionary itself. If an object in the second
dictionary is mutated, the same object in the first dictionary
changes also. That is the OP's problem.
Of course, but that's not what this code is about:
newThing2 = [NSMutableDictionary dictionaryWithCapacity:20];
[newThing2 setDictionary:newThing];
[newThing2 setObject:foo forKey:bar]; // at this method line
[newThing objectForKey:bar] is now foo
Here, the OP tells that the original dictionary (newThing) is updated
when he set a value in the new dictionary (newThing2).
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