On 29.11.2008, at 19:00, Pierce Freeman wrote:
The only problem with running that is that I get a error in the log
and it
doesn't seem to be working:
-[NSCFSet minusSet:]: mutating method sent to immutable object
My slightly modified code is below:
NSMutableSet *openApplicationsSet = [NSSet
setWithArray:openApplications];
NSSet *allowedApplicationsSet = [NSSet
setWithArray:applicationsAllowedMutableArray];
NSSet *badApplicationsSet = [openApplicationsSet
minusSet:allowedApplicationsSet];
badApplicationsSet is – as NSSet * – NOT mutable here, but you want to
mutate it – just as the compiler told you: "mutating method sent to
immutable object".
NSMutableSet * badApplicationsSet = ...
NSLog(badApplicationsSet);
Better, to avoid more crashs, would be:
NSLog(@"badApplicationsSet: %@", badApplicationsSet);
Klaus
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