set insert problem

[Angus]

Should I not be able to do this:

std::set<int> myset;
std::list<int> intlist;
intlist.push_back(1);
intlist.push_back(2);
intlist.push_back(3);
intlist.push_back(4);

myset.insert(intlist.begin(), intlist.end());

in MSVC v6 I get:
C:\Support\CPP\Set_Test.cpp(32) : error C2664: 'class
std::_Tree<int,int,struct std::set<int,struct std::less<int>,class
std::allocator<int> >::_Kfn,struct std::less<int>,class
std::allocator<int> >::iterator __thiscall std::set<int,struct
std::less
<int>,class std::allocator<int> >::insert(class
std::_Tree<int,int,struct std::set<int,struct std::less<int>,class
std::allocator<int> >::_Kfn,struct std::less<int>,class
std::allocator<int> >::iterator,const int &)' : cannot convert
parameter 1 fro
m 'class std::list<int,class std::allocator<int> >::iterator' to
'class std::_Tree<int,int,struct std::set<int,struct
std::less<int>,class std::allocator<int> >::_Kfn,struct
std::less<int>,class std::allocator<int> >::iterator'
No constructor could take the source type, or constructor
overload resolution was ambiguous

Is this a compiler limitation or am I doing something wrong? Any idea
on a workaround if it is a compiler limitation?

 

[Francesco]

Should I not be able to do this:

std::set<int> myset;
std::list<int> intlist;
intlist.push_back(1);
intlist.push_back(2);
intlist.push_back(3);
intlist.push_back(4);

myset.insert(intlist.begin(), intlist.end());

in MSVC v6 I get:
C:\Support\CPP\Set_Test.cpp(32) : error C2664: 'class
std::_Tree<int,int,struct std::set<int,struct std::less<int>,class
std::allocator<int> >::_Kfn,struct std::less<int>,class
std::allocator<int> >::iterator __thiscall std::set<int,struct
std::less
<int>,class std::allocator<int> >::insert(class
std::_Tree<int,int,struct std::set<int,struct std::less<int>,class
std::allocator<int> >::_Kfn,struct std::less<int>,class
std::allocator<int> >::iterator,const int &)' : cannot convert
parameter 1 fro
m 'class std::list<int,class std::allocator<int> >::iterator' to
'class std::_Tree<int,int,struct std::set<int,struct
std::less<int>,class std::allocator<int> >::_Kfn,struct
std::less<int>,class std::allocator<int> >::iterator'
        No constructor could take the source type, or constructor
overload resolution was ambiguous

Is this a compiler limitation or am I doing something wrong?  Any idea
on a workaround if it is a compiler limitation?

That's fine, and works for me (GCC).

HTH,
Francesco

 

[Francesco]

Should I not be able to do this:

std::set<int> myset;
std::list<int> intlist;
intlist.push_back(1);
intlist.push_back(2);
intlist.push_back(3);
intlist.push_back(4);

myset.insert(intlist.begin(), intlist.end());

in MSVC v6 I get:
C:\Support\CPP\Set_Test.cpp(32) : error C2664: 'class
std::_Tree<int,int,struct std::set<int,struct std::less<int>,class
std::allocator<int> >::_Kfn,struct std::less<int>,class
std::allocator<int> >::iterator __thiscall std::set<int,struct
std::less
<int>,class std::allocator<int> >::insert(class
std::_Tree<int,int,struct std::set<int,struct std::less<int>,class
std::allocator<int> >::_Kfn,struct std::less<int>,class
std::allocator<int> >::iterator,const int &)' : cannot convert
parameter 1 fro
m 'class std::list<int,class std::allocator<int> >::iterator' to
'class std::_Tree<int,int,struct std::set<int,struct
std::less<int>,class std::allocator<int> >::_Kfn,struct
std::less<int>,class std::allocator<int> >::iterator'
        No constructor could take the source type, or constructor
overload resolution was ambiguous

Is this a compiler limitation or am I doing something wrong?  Any idea
on a workaround if it is a compiler limitation?

Sorry, overlooked this part. You could write an explicit loop to do
the insertion, eventually localizing it in a function.

You could get better help on this specific issue on a compiler
specific group.

Cheers,
Francesco

 

[James Kanze]

Should I not be able to do this:

std::set<int> myset;
std::list<int> intlist;
intlist.push_back(1);
intlist.push_back(2);
intlist.push_back(3);
intlist.push_back(4);

myset.insert(intlist.begin(), intlist.end());

in MSVC v6 I get:
C:\Support\CPP\Set_Test.cpp(32) : error C2664: 'class
std::_Tree<int,int,struct std::set<int,struct std::less<int>,class
std::allocator<int> >::_Kfn,struct std::less<int>,class
std::allocator<int> >::iterator __thiscall std::set<int,struct
std::less
<int>,class std::allocator<int> >::insert(class
std::_Tree<int,int,struct std::set<int,struct std::less<int>,class
std::allocator<int> >::_Kfn,struct std::less<int>,class
std::allocator<int> >::iterator,const int &)' : cannot convert
parameter 1 fro
m 'class std::list<int,class std::allocator<int> >::iterator' to
'class std::_Tree<int,int,struct std::set<int,struct
std::less<int>,class std::allocator<int> >::_Kfn,struct
std::less<int>,class std::allocator<int> >::iterator'
No constructor could take the source type, or constructor
overload resolution was ambiguous

Is this a compiler limitation or am I doing something wrong?

You're doing something wrong. Mainly, using a very outdated
compiler. The above is perfectly legal, and works with up to
date versions of VC++.

Any idea on a workaround if it is a compiler limitation?

If for some reason you cannot change the compiler, then you have
to use std::copy and an insertion iterator:

std::copy( intlist.begin(), intlist.end(),
std::inserter( myset, myset.end() ) ) ;

 

[Balog Pal]

std::set<int> myset;
std::list<int> intlist;
intlist.push_back(1);
intlist.push_back(2);
intlist.push_back(3);
intlist.push_back(4);

myset.insert(intlist.begin(), intlist.end());

in MSVC v6 I get: ...

Is this a compiler limitation or am I doing something wrong? Any idea
on a workaround if it is a compiler limitation?

The code is fine, MSVC 6.0 is a pre-standard beast wich you should not use,
or at least with std:: stuff. If you absolutely must, at least check out
the replacement standard libs, possibly that would accept this code. IIRC
Dincumware offered a lib upgrade for ~$50. The normal solution is
obviously to switch to VS2008 (free ed. available)

 

[Angus]

The code is fine, MSVC 6.0 is a pre-standard beast wich you should not use,
or at least with std:: stuff.   If you absolutely must, at least check out
the replacement standard libs, possibly that would accept this code.  IIRC
Dincumware offered a lib upgrade for ~$50.   The normal solution is
obviously to switch to VS2008 (free ed. available)

I use this compiler at work ... so I need to know the limitations.

Anyway the only workaround I could find was to iterate thru the list
elements and insert each one

I wasn't aware of $50 upgrade. I will enquire.