.. _one-or-more:

===========
one-or-more
=========== 

Returns a sequence if it contains one or more items, otherwise errors

Description
~~~~~~~~~~~
The fn:one-or-more function returns $arg if it contains one or more items. 
Otherwise, the error FORG0004 is raised. This function is useful when static 
typing is in effect, to avoid apparent static type errors.

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   :header-rows: 1

   * - **Parameters**
     - **Description**
   * - arg:item()
     - 

Examples
~~~~~~~~
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   * - **XPath**
     - **Results**
   * - one-or-more( () )
     - Error FORG0004
   * - one-or-more('a')
     - a
   * - one-or-more( ('a', 'b') )
     - ('a', 'b')

See Also
~~~~~~~~

.. toctree::
   :titlesonly:
   :glob:

* :ref:`exactly-one`.
* :ref:`zero-or-one`.