Error: cannot uniquely infer foreach argument types

[Agustin]

Hello, i'm trying to create a library with utilities classes like 
containers using Java API. Could anyone help me?

public interface Iterator(E) {
   bool hasNext();
   E next();
   void remove();
   int opApply(int delegate(ref E) delegation);
}
public class AbstractCollection(E) : Collection!E {

   .....

    E[] toArray(E[] dst = null) {
        size_t count = size();
        if( dst.length < count ) {
                dst.length = count;
        }
        Iterator!E it = iterator();
    	foreach(int i,E e; it) { -> Error: cannot uniquely infer 
foreach argument types
                dst[i] = e;
        }
        return dst[0 .. count];
    }

   .....

}