.. _functx_substring-before-last:

============================
functx:substring-before-last
============================ 

The substring before the last occurrence of a delimiter

Description
~~~~~~~~~~~
The functx:substring-before-last function returns the part of $arg that appears 
before the last occurrence of $delim. If $arg does not contain $delim, a 
zero-length string is returned.

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

   * - **Parameters**
     - **Description**
   * - arg:string()
     - the string to substring
   * - delim:string()
     - the delimiter

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

   * - **XPath**
     - **Results**
   * - functx:substring-before-last('abc-def-ghi', '-')
     - abc-def
   * - functx:substring-before-last('abcd-abcd', 'ab')
     - abcd-
   * - functx:substring-before-last('abcd-abcd', 'x')
     - zero-length string

See Also
~~~~~~~~

.. toctree::
   :titlesonly:
   :glob:

* :ref:`substring-before`.
* :ref:`functx_substring-before-if-contains`.
* :ref:`functx_substring-after-last`.