.. index:: pair: class; QPanda::MetadataValidity .. _doxid-class_q_panda_1_1_metadata_validity: class QPanda::MetadataValidity ============================== .. toctree:: :hidden: Metadata Validity. .. ref-code-block:: cpp :class: doxyrest-overview-code-block #include class MetadataValidity { public: // methods void :target:`push_back`(:ref:`MetadataValidity_cb` func); :ref:`MetadataValidity_cb` :target:`operator []` (int i); size_t :target:`size`(); };