NSComparisonResult

NSComparisonResult compareResult;

compareResult = [str1 compare:str2];

if (compareResult == NSOrderedAscending)
NSLog(@"str1 preceeds str2");
else if (compareResult == NSOrderedSame)
NSLog(@"str1 is the same as str2");
else // must be NSOrderedDescending
NSLog(@"str1 follows str2");

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