Enumerating array which contains a dictionary produces unexpected output

Question

My question is why does it output the last 4 lines in the log(see below)...those objects are part of the dictionary printed earlier in the log & should not be located at the end of the array? I am missing something fundamental here... thx ``` NSDictionary *dictionary = [NSDictionary dictionaryWithObjectsAndKeys: [NSURL URLWithString: @"www.stanford.edu"], @"Stanford University", [NSURL URLWithString: @"www.apple.com"], @"Apple shop", [NSURL URLWithString: @"cs193p.stanford.edu"], @"CS193P course", [NSURL URLWithString: @"itunes.stanford.edu"], @"Stanford on iTunes U", [NSURL URLWithString: @"stanfordshop.com"], @"Stanford Mall", nil]; NSMutableArray *myArray = [NSMutableArray arrayWithObjects: [NSString init], [NSURL URLWithString: @"www.stanford.edu"], [NSProcessInfo processInfo], dictionary, [@"Mutable string example" mutableCopy], [@"another mutable string" mutableCopy]]; NSEnumerator *enumerator = [myArray objectEnumerator]; id object; while ((object = [enumerator nextObject])) {…

Accepted Answer

I think you're missing the nil necessary as the last argument when you create your NSMutableArray using the convenience method. Does

```
NSMutableArray *myArray = [NSMutableArray arrayWithObjects:
    [NSString init],
    [NSURL URLWithString: @"www.stanford.edu"],
    [NSProcessInfo processInfo],
    dictionary,
    [@"Mutable string example" mutableCopy],
    [@"another mutable string" mutableCopy],
    nil];
```

work?

Enumerating array which contains a dictionary produces unexpected output

Solution

Problem