.. _exhale_struct_structsequant_1_1_index_basis_1_1bad__key:

Struct IndexBasis::bad_key
==========================

- Defined in :ref:`file_SeQuant_core_basis.hpp`


Nested Relationships
--------------------

This struct is a nested type of :ref:`exhale_class_classsequant_1_1_index_basis`.


Inheritance Relationships
-------------------------

Base Type
*********

- ``public sequant::IndexSpace::bad_key`` (:ref:`exhale_struct_structsequant_1_1_index_space_1_1bad__key`)


Derived Type
************

- ``public sequant::IndexBasisRegistry::not_a_space`` (:ref:`exhale_struct_structsequant_1_1_index_basis_registry_1_1not__a__space`)


Struct Documentation
--------------------


.. doxygenstruct:: sequant::IndexBasis::bad_key
   :project: SeQuant
   :members:
   :protected-members:
   :undoc-members: