Best way to remove from NSMutableArray while iterating?

In Cocoa, if I want to loop through an NSMutableArray and remove multiple objects that fit a certain criteria, what’s the best way to do this without restarting the loop each time I remove an object?

Thanks,

Edit: Just to clarify – I was looking for the best way, e.g. something more elegant than manually updating the index I’m at. For example in C++ I can do;

iterator it = someList.begin();

while (it != someList.end())
{
    if (shouldRemove(it))   
        it = someList.erase(it);
}