.. index:: py::builtins::in::in

.. _doxycast_pypp_classpy_1_1builtins_1_1in_1a8ad47d267d0e786c700784caa81cd0a3:

.. _py-builtins-in-in:

*py::builtins::in::*\ in
========================

.. code-block:: cpp

     explicit constexpr in(const type& iterable);

Constructs an ``py::builtins::in`` object.


Parameters
----------

``iterable``: An iterable object.


Complexity
----------

Constant.


Example
-------

.. code-block:: cpp

     #include <pypp/builtins/list.hpp>
     #include <pypp/builtins/in.hpp>
     #include <pypp/builtins/print.hpp>

     int main()
     {
         py::list<int> nums = {0, 1, 2, 3, 4, 5, 6};

         // Equivalent to ``4 in nums`` in Python
         py::print(4 ->* py::in(nums));
     }

**Output**:

.. code-block:: text

     true