.. _doc-available:

=============
doc-available
============= 

Whether a document is available

Description
~~~~~~~~~~~
The fn:doc-available function is a way to avoid the errors returned by the 
fn:doc function if a document is not available. This function will return true 
if calling the fn:doc function on the same URI will result in a document node. 
It will return false if the fn:doc function would not return a document node.

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   * - **Parameters**
     - **Description**
   * - uri:string()
     - the URI of the document to check for

Examples
~~~~~~~~
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   * - **XPath**
     - **Results**
   * - doc-available('http://www.functx.com/input/order.xml')
     - true
   * - doc-available('http://www.functx.com/input/foo.xml')
     - false

See Also
~~~~~~~~

.. toctree::
   :titlesonly:
   :glob:

* :ref:`doc`.