我正在尝试创建我自己的迭代器，并且我已经使它在std::generate算法中正常工作。但是，当我尝试std::find的std::max_element时，我得到了一些神秘的错误。

下面是我的迭代器的接口:

template <typename GridT, 
          typename GridPtr,
          typename GridRef,
          template <typename> class ShapeT>
class GridIterator
{
public:
    typedef GridIterator<GridT, GridPtr, GridRef, ShapeT> Iterator;

    // Iterator traits - typedefs and types required to be STL compliant
    typedef std::ptrdiff_t           difference_type;
    typedef typename GridT::Element  value_type;
    typedef typename GridT::Element* pointer;
    typedef typename GridT::Element& reference;
    typedef size_t                   size_type;
    std::forward_iterator_tag        iterator_category;


    GridIterator(GridT& grid,
                 ShapeT<typename GridT::Resolution> shape,
                 Index iterStartIndex);

    ~GridIterator();

    Iterator& operator++();
    Iterator  operator++(int);

    typename GridT::Element& operator*();
    typename GridT::Element* operator->();

    bool operator!=(const GridIterator& rhs) const;
    bool operator==(const GridIterator& rhs) const; 
    ....

}

使用std::find，我会得到以下错误

包含在/usr/include/C++/4.6/Algorith:63:0，from./grid/map_grid.h:11，from main.cpp:4:/usr/include/C++/4.6/bits/stl_algo.h:在函数'_iiterstd::find(_iiter，_iiter，const_tp&)中[with_IITER=MAP::Griditerator，MAP::Grid*，MAP::Grid&；，MAP::Rectangle>，_TP=int]':main.cpp:103:50:从此处实例化/usr/include/C++/4.6/bits/stl_algo.H:4404:45:错误:调用“__iterator_category(MAP::Griditerator，MAP::Grid*，MAP::Grid&；，MAP::Rectangle>&)'没有匹配函数

使用std::max_element:

包含在以下文件中:/usr/include/c++/4.6/bits/char_traits.h:41:0，/usr/include/c++/4.6/ios:41，/usr/include/c++/4.6/ostream:40，/usr/include/c++/4.6/ostream:40，/./grid/map_griditerator.h:7，/./grid/map_grid.h:8，from main.cpp:4:/usr/include/c++/4.6/bits/stl_algobase.h:在函数'const_tp&；STD::MAX（const_tp&；，const_tp&；）[with_TP=MAP::GridIterator，MAP::Grid*，MAP::Grid&；，MAP::Rectangle>]“:main.cpp:102:60:
从此处实例化/usr/include/C++/4.6/bits/stl_algobase.h:215:7:错误:”__a<；__B'/usr/include/C++/4.6/bits/stl_algobase.H:215:7:注意:候选项是:/usr/include/C++/4.6/bits/stl_pair.H:207:5:注意:模板constexpr bool std::operator<(const std::pair<_t1，_t2>&，const std::pair<_t1，_t2>&)/usr/include/c++/4.6/bits/stl_iterator.h:291:5:注意:模板bool std::operator<(const std::reverse_iterator<_iterator>>，const std::reverse_iterator<_iterator>)/usr/include/c++/4.6/bits/stl_iterator.h:341:5:注意:template bool std::operator<(const std::reverse_iterator<_iterator>&，const std::reverse_iterator<_iterator&>)/usr/include/c++/4.6/bits/stl_iterator.h:1049:5:注意:template bool std::operator<(const std::move_iterator<_iterator>&，const std::move_iterator<_iterator&>)/usr/include/c++/4.6/bits/stl_iterator.h:1055:5:注意:模板bool std::operator<(const std::move_iterator<_iterator>>，const std::move_iterator<_iterator>)/usr/include/C++/4.6/bits/basic_string.h:2510:5:注意:模板bool std::operator<(const std::basic_string<_chart，_traits，_alloc>&，const std::basic_string<_chart，_traits，_alloc>)/usr/include/c++/4.6/bits/basic_string.h:2522:5:注意:template bool std::operator<(const std::basic_string<_chart，_traits，_alloc>&，const_chart*)/usr/include/c++/4.6/bits/basic_string.h:2534:5:注意:template bool std::operator<(const_chart*，const std::basic_string<_chart，_traits，_alloc>&)/usr/include/C++/4.6/bits/stl_vector.h:1290:5:注意:模板bool std::operator<(const std::vector<_tp，_alloc>&，const std::vector<_tp，_alloc>&)/usr/include/C++/4.6/tuple:586:5:注意:template bool std::operator<(const std::tuple<_telements...>&，const std::tuple<_elements...>&)