.. _functx_distinct-attribute-names:

===============================
functx:distinct-attribute-names
=============================== 

The distinct names of all attributes in an XML fragment

Description
~~~~~~~~~~~
The functx:distinct-attribute-names function returns the distinct set of 
attribute names that exist on nodes in $nodes or their descendants.

.. list-table::
   :widths: 40 60
   :header-rows: 1

   * - **Parameters**
     - **Description**
   * - nodes:node()
     - the root to start from

Examples
~~~~~~~~
.. list-table::
   :widths: 50 50
   :header-rows: 1

   * - **XPath**
     - **Results**
   * - functx:distinct-attribute-names($in-xml)
     - ('a1', 'a2', 'a3')

See Also
~~~~~~~~

.. toctree::
   :titlesonly:
   :glob:

* :ref:`functx_distinct-element-names`.