[Lua-icxx-users] Difficulty reading a std::string from a LuaTempResult

[Jon <pen...@gm...>]

Hello.

I'm experimenting with lua_icxx to see how helpful it might be. I'm having
trouble with this code:

LuaTempResult ltr = _interpreter_ptr->eval( "return 'test'" );
std::string ret = ltr[ 1 ];

Based on the examples provided it seems it should work. However, I get the
compiler error:

>c:\users\jon\documents\visual studio
2010\projects\dron\dron\script\script.cpp(29): error C2440: 'initializing'
: cannot convert from 'LuaTempResult::Item' to
'std::basic_string<_Elem,_Traits,_Ax>'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>,
1>              _Ax=std::allocator<char>
1>          ]
1>          No constructor could take the source type, or constructor
overload resolution was ambiguous

When I change the code somewhat, I get an error better describing the
ambiguity:

1>c:\users\jon\documents\visual studio
2010\projects\dron\dron\script\script.cpp(27): error C2593: 'operator =' is
ambiguous
1>          c:\program files (x86)\microsoft visual studio
10.0\vc\include\xstring(772): could be
'std::basic_string<_Elem,_Traits,_Ax>
&std::basic_string<_Elem,_Traits,_Ax>::operator =(_Elem)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>,
1>              _Ax=std::allocator<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio
10.0\vc\include\xstring(767): or
'std::basic_string<_Elem,_Traits,_Ax>
&std::basic_string<_Elem,_Traits,_Ax>::operator =(const _Elem *)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>,
1>              _Ax=std::allocator<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio
10.0\vc\include\xstring(762): or
'std::basic_string<_Elem,_Traits,_Ax>
&std::basic_string<_Elem,_Traits,_Ax>::operator =(const
std::basic_string<_Elem,_Traits,_Ax> &)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>,
1>              _Ax=std::allocator<char>
1>          ]
1>          c:\program files (x86)\microsoft visual studio
10.0\vc\include\xstring(707): or
'std::basic_string<_Elem,_Traits,_Ax>
&std::basic_string<_Elem,_Traits,_Ax>::operator
=(std::basic_string<_Elem,_Traits,_Ax> &&)'
1>          with
1>          [
1>              _Elem=char,
1>              _Traits=std::char_traits<char>,
1>              _Ax=std::allocator<char>
1>          ]
1>          while trying to match the argument list '(std::string,
LuaTempResult::Item)'

Am I doing something wrong? How can I get this to work?

Thanks

Jon.