Enumerating a NSArray of different objects

Question

NSMutableArray *array = [NSMutableArray arrayWithObjects:@"Hello World!", [NSURL URLWithString:@"http://www.apple.com"], nil];
for (id *object in array) {
 NSLog(@"Class name: %@", [object className]);
}

Given the above array of varying objects what is the proper way to fast enumerate thru them? Using the above code I do see my log statement properly, but Xcode does complain with the following message

Invalid receiver type 'id*' on my NSLog statement.

Xcode is the IDE, not the compiler. Currently, the compiler is GCC unless you've switched it to Clang. — Peter Hosey
– Peter Hosey, Commented Aug 23, 2010 at 20:23

Georg Fritzsche · Accepted Answer · 2010-08-23 19:20:57Z

10

That should be:

for (id object in array) {
// ...

That is because id already is a pointer, see the section on id in Apples The Objective-C Programming Language for details on it.

answered Aug 23, 2010 at 19:20

Georg Fritzsche

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