.. index:: py::builtins::range::begin

.. _doxycast_pypp_classpy_1_1builtins_1_1range_1a58b65b86fbeeea14819ad1a0946cdea4:

.. _py-builtins-range-begin:

*py::builtins::range::*\ begin
==============================

.. code-block:: cpp

     constexpr const_iterator begin() const;

Returns a constant iterator to the first value of the range.

.. warning::

     Iterators of ``range`` don't support ``operator ->`` as they
     are constructed on demand.

.. tip::

     Equivalent to :ref:`py-builtins-range-cbegin`.

.. graphviz:: ../assets/range-begin-end.dot


Return value
------------

A constant iterator to the first value.


Complexity
----------

Constant.


Example
-------

.. code-block:: cpp

     #include <pypp/builtins/range.hpp>
     #include <pypp/builtins/print.hpp>

     int main()
     {
         py::range<int> range(4);
         py::print(*range.begin());
     }

**Output**:

.. code-block:: text

     0