Created
December 19, 2012 13:15
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| NSMutableSet * set = [NSMutableSet set]; | |
| [@[] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) { | |
| if ([obj isKindOfClass:[MyClass class]]) { | |
| [set addObject:obj]; | |
| } | |
| }]; |
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