class template

std::tuple

<tuple>
template <class... Types> class tuple;
Tuple
A tuple is an object capable to hold a collection of elements. Each element can be of a different type.

Template parameters

Types
A list of types used for the elements, in the same order as they are going to be ordered in the tuple.

Member types

none.

Member functions

(constructor)
Construct tuple (public member function)
tuple::operator=
Assign content (public member function)
tuple::swap
Swap content (public member function)

Member constants

ignore
Ignore assignment (object )


Example

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// tuple example
#include <iostream>
#include <tuple>

int main ()
{
  std::tuple<int,char> foo (10,'x');
  auto bar = std::make_tuple ("test", 3.1, 14, 'y');

  std::get<2>(bar) = 100;                              // access element of bar

  int myint; char mychar;

  std::tie (myint, mychar) = foo;                      // unpack elements
  std::tie (std::ignore, std::ignore, myint, mychar);  // unpack elements (with ignore)

  mychar = std::get<3>(bar);

  std::get<0>(foo) = std::get<2>(bar);
  std::get<1>(foo) = mychar;

  std::cout << "foo contains: ";
  std::cout << std::get<0>(foo) << " ";
  std::cout << std::get<1>(foo) << std::endl;

  return 0;
}

Output:
foo contains: 100 y