C2784 triggered by STL::Set insert() and find()

From:

Olumide <50295@web.de>

Newsgroups:

comp.lang.c++

Date:

Sun, 12 Oct 2008 17:14:56 -0700 (PDT)

Message-ID:

<e9882448-86be-47ac-8915-92e1c63d3303@v15g2000hsa.googlegroups.com>

Hello,

I've got this nice inner class that I'm holds a set of "FrontPoint"
objects as shown below. Unfortunately, the find and insert methods
trigger massive C2784 errors. Would someone please point out what I'm
doing wrong?

Many thanks,

- Olumide

//////////////////////// code ////////////////////////

struct FrontPoint
{
      // stuff
};

class Cell
{
public:
    double xMin , xMax, yMin, yMax , zMin , zMax;
    Cell *upper , *lower , *north, *south, *east , *west;
    Cell::Cell(){ upper = lower = north = south = east = west = NULL; }
    set<FrontPoint > frontPoint;

    void addFrontPoint( FrontPoint& frontPt )
    {
        frontPoint.insert( frontPt ); // Triggers C2784
    }

    void removeFrontPoint( FrontPoint& frontPt )
    {
        set<FrontPoint >::iterator frontPtItx =
frontPoint.find( frontPt ); // Triggers C2784
    }
};

//////////////////////// error ////////////////////////

c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::basic_string<_Elem,_Traits,_Alloc> &,const _Elem *)' : could not
deduce template argument for 'const
std::basic_string<_Elem,_Traits,_Ax> &' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\string(148) : see declaration of 'std::operator`<''
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(138) : while compiling class-template member function
'bool std::less<_Ty>::operator ()(const _Ty &,const _Ty &) const'
        with
        [
            _Ty=MarchingTriangles::FrontPoint
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\set(48) : see reference to class template instantiation
'std::less<_Ty>' being compiled
        with
        [
            _Ty=MarchingTriangles::FrontPoint
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(23) : see reference to class template instantiation
'std::_Tset_traits<_Kty,_Pr,_Alloc,_Mfl>' being compiled
        with
        [
            _Kty=MarchingTriangles::FrontPoint,
            _Pr=std::less<MarchingTriangles::FrontPoint>,
            _Alloc=std::allocator<MarchingTriangles::FrontPoint>,
            _Mfl=false
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(65) : see reference to class template instantiation
'std::_Tree_nod<_Traits>' being compiled
        with
        [

_Traits=std::_Tset_traits<MarchingTriangles::FrontPoint,std::less<MarchingTriangles::FrontPoint>,std::allocator<MarchingTriangles::FrontPoint>,false>
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(87) : see reference to class template instantiation
'std::_Tree_ptr<_Traits>' being compiled
        with
        [

_Traits=std::_Tset_traits<MarchingTriangles::FrontPoint,std::less<MarchingTriangles::FrontPoint>,std::allocator<MarchingTriangles::FrontPoint>,false>
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(105) : see reference to class template instantiation
'std::_Tree_val<_Traits>' being compiled
        with
        [

_Traits=std::_Tset_traits<MarchingTriangles::FrontPoint,std::less<MarchingTriangles::FrontPoint>,std::allocator<MarchingTriangles::FrontPoint>,false>
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\set(57) : see reference to class template instantiation
'std::_Tree<_Traits>' being compiled
        with
        [

_Traits=std::_Tset_traits<MarchingTriangles::FrontPoint,std::less<MarchingTriangles::FrontPoint>,std::allocator<MarchingTriangles::FrontPoint>,false>
        ]
        c:\Work\Project\MuscleBuilder\MarchingTriangles.h(72) : see
reference to class template instantiation 'std::set<_Kty>' being
compiled
        with
        [
            _Kty=MarchingTriangles::FrontPoint
        ]
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const _Elem
*,const std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce
template argument for 'const T1 *' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\string(138) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::basic_string<_Elem,_Traits,_Alloc> &,const
std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce
template argument for 'const std::basic_string<_Elem,_Traits,_Ax> &'
from 'const MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\string(128) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::list<_Ty,_Alloc> &,const std::list<_Ty,_Alloc> &)' : could not
deduce template argument for 'const std::list<_Ty,_Ax> &' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\list(991) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::_Tree<_Traits> &,const std::_Tree<_Traits> &)' : could not deduce
template argument for 'const std::_Tree<_Traits> &' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(1170) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::vector<_Ty,_Alloc> &,const std::vector<_Ty,_Alloc> &)' : could
not deduce template argument for 'const std::vector<_Ty,_Ax> &' from
'const MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\vector(915) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::reverse_iterator<_RanIt> &,const std::reverse_iterator<_RanIt>
&)' : could not deduce template argument for 'const
std::reverse_iterator<_RanIt> &' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xutility(655) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::pair<_Ty1,_Ty2> &,const std::pair<_Ty1,_Ty2> &)' : could not
deduce template argument for 'const std::pair<_Ty1,_Ty2> &' from
'const MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\utility(73) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2676: binary '<' : 'const
MarchingTriangles::FrontPoint' does not define this operator or a
conversion to a type acceptable to the predefined operator
MarchingTriangles.cpp
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::basic_string<_Elem,_Traits,_Alloc> &,const _Elem *)' : could not
deduce template argument for 'const
std::basic_string<_Elem,_Traits,_Ax> &' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\string(148) : see declaration of 'std::operator`<''
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(138) : while compiling class-template member function
'bool std::less<_Ty>::operator ()(const _Ty &,const _Ty &) const'
        with
        [
            _Ty=MarchingTriangles::FrontPoint
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\set(48) : see reference to class template instantiation
'std::less<_Ty>' being compiled
        with
        [
            _Ty=MarchingTriangles::FrontPoint
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(23) : see reference to class template instantiation
'std::_Tset_traits<_Kty,_Pr,_Alloc,_Mfl>' being compiled
        with
        [
            _Kty=MarchingTriangles::FrontPoint,
            _Pr=std::less<MarchingTriangles::FrontPoint>,
            _Alloc=std::allocator<MarchingTriangles::FrontPoint>,
            _Mfl=false
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(65) : see reference to class template instantiation
'std::_Tree_nod<_Traits>' being compiled
        with
        [

_Traits=std::_Tset_traits<MarchingTriangles::FrontPoint,std::less<MarchingTriangles::FrontPoint>,std::allocator<MarchingTriangles::FrontPoint>,false>
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(87) : see reference to class template instantiation
'std::_Tree_ptr<_Traits>' being compiled
        with
        [

_Traits=std::_Tset_traits<MarchingTriangles::FrontPoint,std::less<MarchingTriangles::FrontPoint>,std::allocator<MarchingTriangles::FrontPoint>,false>
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(105) : see reference to class template instantiation
'std::_Tree_val<_Traits>' being compiled
        with
        [

_Traits=std::_Tset_traits<MarchingTriangles::FrontPoint,std::less<MarchingTriangles::FrontPoint>,std::allocator<MarchingTriangles::FrontPoint>,false>
        ]
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\set(57) : see reference to class template instantiation
'std::_Tree<_Traits>' being compiled
        with
        [

_Traits=std::_Tset_traits<MarchingTriangles::FrontPoint,std::less<MarchingTriangles::FrontPoint>,std::allocator<MarchingTriangles::FrontPoint>,false>
        ]
        c:\Work\Project\MuscleBuilder\MarchingTriangles.h(72) : see
reference to class template instantiation 'std::set<_Kty>' being
compiled
        with
        [
            _Kty=MarchingTriangles::FrontPoint
        ]
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const _Elem
*,const std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce
template argument for 'const T1 *' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\string(138) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::basic_string<_Elem,_Traits,_Alloc> &,const
std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce
template argument for 'const std::basic_string<_Elem,_Traits,_Ax> &'
from 'const MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\string(128) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::vector<_Ty,_Alloc> &,const std::vector<_Ty,_Alloc> &)' : could
not deduce template argument for 'const std::vector<_Ty,_Ax> &' from
'const MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\vector(915) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::list<_Ty,_Alloc> &,const std::list<_Ty,_Alloc> &)' : could not
deduce template argument for 'const std::list<_Ty,_Ax> &' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\list(991) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::_Tree<_Traits> &,const std::_Tree<_Traits> &)' : could not deduce
template argument for 'const std::_Tree<_Traits> &' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xtree(1170) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::reverse_iterator<_RanIt> &,const std::reverse_iterator<_RanIt>
&)' : could not deduce template argument for 'const
std::reverse_iterator<_RanIt> &' from 'const
MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\xutility(655) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2784: 'bool std::operator <(const
std::pair<_Ty1,_Ty2> &,const std::pair<_Ty1,_Ty2> &)' : could not
deduce template argument for 'const std::pair<_Ty1,_Ty2> &' from
'const MarchingTriangles::FrontPoint'
        c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\utility(73) : see declaration of 'std::operator`<''
c:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include
\functional(139) : error C2676: binary '<' : 'const
MarchingTriangles::FrontPoint' does not define this operator or a
conversion to a type acceptable to the predefined operator