#include <stdio.h>
#include <boost/function.hpp>

int return_shit()
{
	printf("Shit!!!\n");
	return  1 ;
}

int return_a_lot_of_shit()
{
	printf("Over nine thousand shit!!!\n");
	return  90001 ;
}

typedef boost::function<int ()> func;

template<typename t1,typename t2,typename R>
R tri(bool a, t1 d1, t2 d2 )
{
	if (a ) return d1();
	return d2();
}

int main()
{
	int x =  100 ;

	int a = tri<func,func,int>( x >  9000  , func(&return_a_lot_of_shit) , func(&return_shit) );
	printf( "a=%d", a );
	return  0 ;
}

#include <stdio.h>
#include <boost/function.hpp>
#include <boost/bind.hpp>

int return_shit(int a)
{
	printf("Shit!!!\n");
	return a;
}

int return_a_lot_of_shit(int a, int b)
{
	printf("Over nine thousand shit !!!\n");
	return a+b;
}

template<typename tt>
struct func_type{
	typedef boost::function<tt()> func;
};

template<typename R>
R tri(bool a, typename func_type<R>::func d1, typename func_type<R>::func d2 )
{
	if (a ) return d1();
	return d2();
}

int main()
{
	int x =  10000 ;

	int a = tri<int>( x >  9000  , boost::bind(&return_a_lot_of_shit, 5 , 10 ) , boost::bind(&return_shit, 6 ) );
	printf( "a=%d", a );
	return  0 ;
}

#define TRI(x,y,z)  ((x)?(y):(z))