boost::make_tuple is a Boost function that produces a boost::tuple. boost::make_tuple is similar to std::make_pair, except that boost::make_tuple produces a boost::tuple, where std::make_pair produces a std::pair.


#include <iostream>

#include <string>

 

#define BOOST_NO_CV_SPECIALIZATIONS

#include <boost/tuple/tuple.hpp>

#include <boost/tuple/tuple_io.hpp>

 

 

int main()

{

  boost::tuple<int,double,std::string> t = boost::make_tuple(123,3.14159,"Bilderbikkel");

 

  const int x1         = t.get<0>();

  const double x2      = t.get<1>();

  const std::string x3 = t.get<2>();

 

  boost::get<0>(t) = x1 + 1;

  boost::get<1>(t) = x2 + 1.0;

  boost::get<2>(t) = x3 + " was here";

 

  std::cout << t << std::endl;

}

Note the following:

a boost::tuple is like an extended std::pair, with a maximum of ten elements
similar to std::make_pair, for tuples you can use boost::make_tuple
boost::get is used for getting and setting elements
if you use C++ Builder 6.0, the #define is a workaround against the compile error tuple_basic.hpp: Multiple declaration for 'element<N,T>'

External links

Boost documentation about boost::tuple

Go back to Richel Bilderbeek's C++ page.

Go back to Richel Bilderbeek's homepage.

(C++) boost::make_tuple

External links