CFLib.org – Common Function Library Project

ListDeleteDuplicates(list)

Last updated July 2, 2008

Version: 1 | Requires: ColdFusion 5 | Library: StrLib

 
Rated 5 time(s). Average Rating: 4.4

Description:
Simply pass it a list and optional delimiter. The function will look for case-sensitive matches, removing any it finds, and return a new list without duplicates.

Return Values:
Returns a list.

Example:

view plain print about
<cfset myList = "apples,oranges,apples,bananas,ORANGES">

<cfoutput>
List before removing dupes: #myList#<br>
List after removing dupes: #ListDeleteDuplicates(myList)#
</cfoutput>

Parameters:

Name Description Required
list The list to be modified. Yes

Full UDF Source:

view plain print about
<cfscript>
/**
 * Case-sensitive function for removing duplicate entries in a list.
 * Based on dedupe by Raymond Camden
 * 
 * @param list      The list to be modified. (Required)
 * @return Returns a list. 
 * @author Jeff Howden (cflib@jeffhowden.com) 
 * @version 1, July 2, 2008 
 */

function ListDeleteDuplicates(list) {
  var i = 1;
  var delimiter = ',';
  var returnValue = '';
  if(ArrayLen(arguments) GTE 2)
    delimiter = arguments[2];
  list = ListToArray(list, delimiter);
  for(i = 1; i LTE ArrayLen(list); i = i + 1)
    if(NOT ListFind(returnValue, list[i], delimiter))
      returnValue = ListAppend(returnValue, list[i], delimiter);
  return returnValue;
}
</cfscript>
blog comments powered by Disqus

Search CFLib.org


Latest Additions

CF Ninja CF Ninja added
calcIRR
8 day(s) ago

Stephen Withington Stephen Withington added
getWeekOfMonth
8 day(s) ago

Adam Cameron Adam Cameron added
createPrimeNumbe...
a while ago

Ray Ford Ray Ford added
timeZoneNow
a while ago

Top Rated

Darwan Leonardo Sitepu backupDatabase
Rated 5.0, 48 time(s)

Barney Boisvert indentXml
Rated 5.0, 12 time(s)

Rachel Lehman deAccent
Rated 5.0, 9 time(s)

Darwan Leonardo Sitepu splitNumber
Rated 5.0, 8 time(s)

Created by Raymond Camden / Design by Justin Johnson