Objective-C Ternary Trick One unique ability of using the ternary operand with objects is that the code can be shorted even further – if the value being checked is also the value after the ternary operator, the value can be omitted from the operation:

ternary.m

- (void)displayErrorMessage:(NSString *)msg
{
  // Even shorter version, when the operant is the same as the "True" case:
  NSString *msgFullString = [NSString stringWithFormat:@"Message: %@", msg ? : @"Unknown error"];
 
  NSLog(@"%@", msgFullString);
}