coldfusion distinct list

Question

I was wondering if there was an easy way to enforce distinct values in a coldfusion list or array.

Thanks

Answer 1

<cfset temp = structNew()>
<cfloop list="a,b,c,a,c" index="i">
  <cfset temp[i] = "">
</cfloop>
<cfset distinctList = structKeyList(temp)>

This is the simplest solution I can think of. The cons of this is the order is not preserved, and list items are case insensitive. If you need case insensitivity, use Java's hashset.

Answer 2

Before adding a value check to see if it exists by using arrayContains or listFindNoCase.