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Operator Type: 

Operator Scope of Action: 

Operator Purpose: 

Operator First Added: 

Operator Altered: 

 Function   [other Function type actions]

 Item   [operators of similar scope]

 Data manipulation   [other Data manipulation operators]




This returns the Nth value of the List as a string. List can be either Set or List type attributes (or string literal, regex pattern, or expression equivalents thereof).

Note: for accessing look-up tables, use list.lookup().

The operator is zero-based, i.e. an N value of 0 returns the first list item, an N of 1 returns value #2, etc. If the value of N exceeds the number of items in the list an empty string (blank value) is returned. A negative number returns an item numbering in reverse, but one-based not zero-based, so '-1' returns the last item on the list, '-2' the last but one item, etc.

Examples (where $MyList is "ant;bee;cow"):

$MyString = $MyList.at(0) returns "ant"

$MyString = "XX;YY;ZZ".at(2) returns "ZZ"

$MyString = $MyList.at(5) returns "" (nothing) 

$MyString = $MyList.at(-2) returns "bee"

The .at() function is also useful for accessing values from look-up tables by providing the relevant key. Consider a look-up list:


This now allows actions like: