boost/python/tuple.hpp

boost/python/tuple.hpp

Introduction
Class tuple
Function make_tuple
Example

Introduction

Exposes a TypeWrapper for the Python http://www.python.org/doc/current/tut/node7.html#SECTION007300000000000000000`tuple` type.

Class `tuple`

Exposes the interface of Python's built-in tuple type. The semantics of the constructors and member functions defined below can be fully understood by reading the TypeWrapper concept definition. Since tuple is publicly derived from object, the public object interface applies to tuple instances as well.

namespace boost { namespace python
{
   class tuple : public object
   {
      // tuple() -> an empty tuple
      tuple();

      // tuple(sequence) -> tuple initialized from sequence's items
      template <class T>
      explicit tuple(T const& sequence)
  };
}}

Function `make_tuple`

namespace boost { namespace python
{
  tuple make_tuple();

  template <class A0>
  tuple make_tuple(A0 const& a0);

  template <class A0, class A1>
  tuple make_tuple(A0 const& a0, A1 const& a1);
  ...
  template <class A0, class A1,...class An>
  tuple make_tuple(A0 const& a0, A1 const& a1,...An const& an);
}}

Effect: Constructs a new tuple object composed of object(a0), object(a0),...object(an).

Example

using namespace boost::python;
tuple head_and_tail(object sequence)
{
    return make_tuple(sequence[0],sequence[-1]);
}