On Sat, 2007-05-19 at 11:12 -0500, Stephen Torri wrote:
I get an error that
Append_Frame.cpp: In member function 'virtual std::string libreverse::java_module::Append_Frame::to_String(uint32_t) const':
Append_Frame.cpp:50: error: 'boost::bind' is not a class or namespace
Are you sure that the second argument is boost::bind::_1? I found that _1 is declared in boost/bind/placeholders.hpp as:
boost::arg<1> _1;
Stephen
Here is a test program that represents the problem we are trying to
solve. A vector contains boost shared pointers for a base class. For
each item in the container we want to call to_String with a value
representing the number of spaces to indent the output.
#include <string>
#include <sstream>
#include
#include <vector>
#include
#include
#include <iostream>
class Base {
public:
virtual std::string to_String ( boost::uint32_t indent ) = 0;
};
class A : public Base {
public:
A ( boost::uint32_t value )
: m_value ( value )
{}
virtual std::string to_String ( boost::uint32_t indent )
{
std::stringstream output;
for ( boost::uint32_t i = 0; i < indent; i++ )
{
output << " ";
}
output << m_value;
return output.str();
}
private:
boost::uint32_t m_value;
};
class D : public Base {
public:
D ( boost::uint32_t value )
: m_value ( value )
{}
virtual std::string to_String ( boost::uint32_t indent )
{
std::stringstream output;
for ( boost::uint32_t i = 0; i < indent; i++ )
{
output << " ";
}
output << m_value;
return output.str();
}
private:
boost::uint32_t m_value;
};
int main ( int, char** )
{
typedef boost::shared_ptr<A> A_ptr_t;
typedef boost::shared_ptr<D> D_ptr_t;
typedef std::vector < boost::shared_ptr<Base> > Data_t;
Data_t m_data;
A_ptr_t a ( new A ( 50 ) );
D_ptr_t d ( new D ( 30 ) );
m_data.push_back ( a );
m_data.push_back ( d );
boost::uint32_t indent_value = 4;
std::for_each ( m_data.begin(),
m_data.end(),
std::cout << boost::bind ( &Base::to_String,
boost::bind::_1,
indent_value ) );
return 0;
}
