Ah I understand, that makes sense. Thanks.
On 2009-12-14, at 9:09 PM, Nick Zitzmann wrote:
>
> On Dec 14, 2009, at 9:07 PM, PCWiz wrote:
>
>> So to make it clear, I invoke the method as an NSInvocationOperation then in
>> the method I do this whenever I need to access the mutable dictionary:
>>
>> - (void)doResourceHungryTask {
>> ...
>> @synchronized (myDictionary) {
>> [myDictionary setObject:anObject forKey:@"testKey"];
>> }
>> }
>>
>> Is that correct?
>
> You must lock and unlock the dictionary **every** time you read from or write
> to it, not just that one time. Otherwise one thread could access it at the
> same time as another thread is writing to it, and that would not be good.
>
> Nick Zitzmann
> <http://www.chronosnet.com/>
>
>
>
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