C ++模板和外部函数声明

I have this:

我有这个:

template <typename T>
class myList
{
    ...
    class myIterator
    {
        ...
        T& operator*();
    }
}
...
template<typename T>
T& myList<T>::myIterator::operator*()
{
    ...
}
template <typename T>
cl