CFLib.org – Common Function Library Project

Description:
Removes all duplicate values from a list. The function is case sensitive so A,a,a will return A,a.

Return Values:
Returns a string.

Example:

<cfoutput>#nodupslist("a|a|a|a|b|b|B|","|")#</cfoutput>

returns b|B|a

Parameters:

Full UDF Source:

/**
 * Remove duplicate values from a list.
 * 
 * @param str      List to parse. (Required)
 * @param delim      List delimiter. Defaults to a comma. (Optional)
 * @return Returns a string. 
 * @author Tony Bentley (tony@tonybentley.com) 
 * @version 1, May 30, 2010 
 */
function nodupslist(str){
    var delim = ",";
    if(arrayLen(arguments) is 2) delim = arguments[2];
    return arrayToList(createObject("java","java.util.HashSet").init(ListToArray(str,delim)).ToArray(),delim);
}