Example parsing error

Question

I\'m trying to parse an example of boost spirit (2.5.2) following the example. My code is the following

#include 
#include         


        

Answer 1

You are missing an include:

#include 

It defines the attribute assignment rules to make Fusion sequences (vector2<>) assignable to std::pair.

See the code live: liveworkspace.org

#include 
#include 
#include 
#include 
#include 

int main()
{
    // Parsing two numbers
    std::string input("1.2 3.4");
    std::pair p;

    namespace qi = boost::spirit::qi;

    qi::phrase_parse(
            input.begin(), 
            input.end(),
            qi::double_ >> qi::double_ , // Parse grammar
            qi::space, p);

    std::cout << "Lo:     " << p.first << "\n"
              << "Behold: " << p.second << "\n";
}