boost::gil::dereference_iterator_adaptor::dereference_iterator_adaptor

dereference_iterator_adaptor();

template<typename Iterator1>
dereference_iterator_adaptor(dereference_iterator_adaptor<Iterator1, DFn> const& dit);

template<
    typename Iterator1,
    typename DFn1>
dereference_iterator_adaptor(dereference_iterator_adaptor<Iterator1, DFn1> const& it);

dereference_iterator_adaptor(
    Iterator it,
    DFn deref_fn = DFn());