====== substring-before======

The //substring-before()// function returns that part of an input string that precedes the first occurrence of a comparison string in the input string. \\
The comparison string should consist of at least one single character or a character string. \\
If the comparison string occurs more than once in the examined string - for example a separator in a list available as a single string - only its first occurrence is considered.

==== Syntax: ====

<code>substring-before('String', 'Comparison String')</code>

==== Example ====

<code>substring-before('SLSRPT_1324.csv,'.csv')</code>

Returns SLSRPT_1324