#include <boost/cstdint.hpp>
#include <boost/lambda/lambda.hpp>
#include <boost/lambda/algorithm.hpp>

#include <cstring>	// memset

#include <iostream>

union block {
    char buffer[512];
    int  integer[128];
};

std::size_t sum( block* blk )
{
    using namespace boost::lambda;

    std::size_t sum = 0;

    std::for_each( &blk->buffer[0],
                   &blk->buffer[0] + sizeof( blk->buffer ),
                   sum += *_1 );

    return sum;
}

int main()
{
    using namespace boost::lambda;

    block blk;

    std::memset( &blk.buffer[0], '1', sizeof( blk.buffer ) );
    std::for_each( &blk.buffer[0], &blk.buffer[0] + sizeof( blk.buffer ),
                   std::cout << *_1 << '\n' );

    std::cout << sum( &blk ) << std::endl;
}