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.. _concept-example:
doxygenconcept Directive Example
================================
.. warning::
C++20 Concepts support was added in Doxygen v1.9.2. Please be sure to use Doxygen v1.9.2 or
newer with :ref:`doxygenconcept`.
Working Example
---------------
This should work:
.. code-block:: rst
.. doxygenconcept:: Hashable
:project: cpp_concept
It produces this output:
.. doxygenconcept:: Hashable
:project: cpp_concept
Failing Example
---------------
This intentionally fails:
.. code-block:: rst
.. doxygenconcept:: MadeUpConcept
:project: cpp_concept
It produces the following warning message:
.. warning::
doxygenconcept: Cannot find concept "MadeUpConcept" in doxygen xml output
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