URL host comparison

问题

Here I am trying to compare the hosts of 2 URLs. Even though that hosts are the same it does not respond why!

Code:

NSURL *url=[NSURL URLWithString:@"http://www.facebook.com/"?ref=logo" ];
    NSURL *domain=[ NSURL URLWithString:@"http://www.facebook.com" ];

    if ( [url host]==[domain host] ) {

        NSLog(@"hosts are matched");
    }else {
        NSLog(@"hosts are not matched!");
    }

回答1:

You need to use isEqualToString:

NSURL *url=[NSURL URLWithString:@"http://www.facebook.com/?ref=logo" ];
NSURL *domain=[ NSURL URLWithString:@"http://www.facebook.com" ];

if ( [[url host] isEqualToString: [domain host]] ) {
    NSLog(@"hosts are matched");
}else {
    NSLog(@"hosts are not matched!");
}

Result

2011-11-23 11:55:06.182 TestApp[14404:207] hosts are matched

来源：https://stackoverflow.com/questions/8239274/url-host-comparison