#include <cassert>
#include <set>
#include <sstream>
#include <string>
#include <vector>

int main()
{
    {
        int value { };
        
        std::istringstream iss { "37 38 39" };
        read(iss, value);
        assert( value == 37 );
    }

    {
        std::string value { };
        
        std::istringstream iss { "a test line" };
        read(iss, value);
        assert( value == "a test line" );
    }

    {
        std::set<char> value { };
        
        std::istringstream iss { "cba" };
        read(iss, value);
        assert(( value == std::set<char>{ 'a', 'b', 'c' } ));
    }
    
    {
        std::vector<int> value { };
        
        std::istringstream iss { "1 4 2 3" };
        read(iss, value);
        assert(( value == std::vector<int>{ 1, 4, 2, 3 } ));
    }    
}