no match for operator =

This is a discussion on no match for operator = within the C++ Programming forums, part of the General Programming Boards category; I am facing below error at highlighted line Code: while (iter != dcFacMap.end()) { FacilityId facId = iter->first->GetFacilityId(); vector<FacilityId>::iterator facIter ...

  1. #1
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    no match for operator =

    I am facing below error at highlighted line

    Code:
         while (iter != dcFacMap.end())
            {
                    FacilityId facId = iter->first->GetFacilityId();
                    vector<FacilityId>::iterator facIter = find(oFacIdList.begin(),
                            oFacIdList.end(), facId);
                    if (facIter == oFacIdList.end())
                    {
                            //DC has no outbound
                            iter = dcFacMap.erase(iter);
                    }
                    else
                    {
                            iter++;
                    }
            }
    error:
    FleetRouteGenManager.cpp:5774: error: no match for ‚operator=‚ in ‚iter = ((SequencedFacilityMap*)dcFacMap)->std::map<_Key, _Tp, _Compare, _Alloc>::erase [with _Key = Facility*, _Tp = std::vector<Facility*, std::allocator<Facility*> >, _Compare = std::less<Facility*>, _Alloc = std::allocator<std::pair<Facility* const, std::vector<Facility*, std::allocator<Facility*> > > >](iter)‚
    /usr/lib/gcc/i386-redhat-linux/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:152: note: candidates are: std::_Rb_tree_iterator<std::pair<Facility* const, std::vector<Facility*, std::allocator<Facility*> > > >& std::_Rb_tree_iterator<std::pair<Facility* const, std::vector<Facility*, std::allocator<Facility*> > > >::operator=(const std::_Rb_tree_iterator<std::pair<Facility* const, std::vector<Facility*, std::allocator<Facility*> > > >&)
    Last edited by vaibhavs17; 03-30-2009 at 06:19 AM.

  2. #2
    Kernel hacker
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    So you haven't got an iterator copy constructor.

    --
    Mats
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  3. #3
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    I could not understand, please explain.

  4. #4
    The larch
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    map::erase might not return an iterator, although this can vary between implementations
    Last edited by anon; 03-30-2009 at 11:12 AM.
    I might be wrong.

    Thank you, anon. You sure know how to recognize different types of trees from quite a long way away.
    Quoted more than 1000 times (I hope).

  5. #5
    Algorithm Dissector iMalc's Avatar
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    Quote Originally Posted by matsp View Post
    So you haven't got an iterator copy constructor.

    --
    Mats
    Nah he's got the copy-constructor, otherwise the line with the find would fail to compile.
    That line is doing assignment anyway. Probably missing the assignment operator.
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