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August 29, 2015 13:56
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| BOOL isEqual(NSObject *a, NSObject *b) | |
| { | |
| if (a) { | |
| if (b) { | |
| return [a isEqual:b]; | |
| } | |
| } else { // a == nil | |
| if (!b) { | |
| return YES; | |
| } | |
| } | |
| return NO; | |
| } |
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