NSString *str = @"origin1";
NSString *strCopy = [str copy];
NSString *str1 = [NSString stringWithFormat:@"origin%@", @1];
    
BOOL equalA = (str == strCopy);
BOOL equalB = (str == str1);

BOOL equalC = [str isEqualToString:str1];  /**< equalC is YES */
BOOL equalD = [str isEqual:str1]; /**< equalD is YES */