MACROMEDIA COLDFUSION 4.5-CFML LANGUAGE, Reference

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Chapter 2: ColdFusion Functions 419
ListInsertAt
Returns list with value inserted at the specified position.
See also ListDeleteAt , ListAppend , ListPrepend , and ListSetAt .
Syntax
ListInsertAt (
list, position, value [, delimiters ])
list
Any list.
position
Position where the value is being inserted. The first position in a list is denoted by
the number 1, not 0.
value
Number or list being inserted.
delimiters
Set of delimiters used in list.
Usage
When inserting elements into a list, ColdFusion needs to insert a delimiter. If
delimiters contain more than one delimiter, ColdFusion defaults to the first delimiter
in the string, or, (comma) if delimiters was omitted.
If you intend to use list functions on strings that are delimited by the conjunction ", "
(comma-space), as is common in HTTP header strings such as the COOKIE header, we
recommend that you specify delimiters to include both comma and space because
ColdFusion Server does not skip white space.
Examples
<!--- This example shows ListInsertAt --->
...
<!--- First, query to get some values for our list. --->
<CFQUERY NAME="GetParkInfo" DATASOURCE="cfsnippets">
SELECT PARKNAME,CITY,STATE
FROM PARKS
WHERE PARKNAME LIKE ‘DE%’
</CFQUERY>
<CFSET temp = ValueList(GetParkInfo.ParkName)>
<CFSET insert_at_this_item = ListGetAt(temp, "3", ",")>
<CFOUTPUT>
<P>The original list: #temp#
</CFOUTPUT>
<!--- Now, insert an item at position three. --->
<CFSET temp2 = ListInsertAt(Temp, "3", "my Inserted Value", ",")>
...