TryCF Gist

trycf-gist-1773697119187-5c8e733c-8f06-c8c6-725a-a99e56a7680a.cfm

<cfscript>
var result = mergeListDistinct("a|b", "b|c", "|");
writedump(result);

</cfscript>

<cffunction name="mergeListDistinct" returntype="string" access="public">
	<cfargument name="lList" type="string" required="true" />
	<cfargument name="lListToAppend" type="string" required="true" />
	<cfargument name="cDelimiter" type="string" required="false" default="," />

	<cfif listLen(arguments.lListToAppend) EQ 0>
		<cfreturn arguments.lList />
	</cfif>
	<cfif listLen(arguments.lList) EQ 0>
		<cfreturn arguments.lListToAppend />
	</cfif>
	<cfreturn getDistinctList(lList=arguments.lList & arguments.cDelimiter & arguments.lListToAppend) />
</cffunction>
<cffunction name="getDistinctList" returntype="string" access="public">
	<cfargument name="lList" type="string" required="true" />
	<cfargument name="cDelimiter" type="string" required="false" default="," />
	<cfreturn arrayToList(getDistinctArray(aValues=listToArray(arguments.lList, arguments.cDelimiter)), arguments.cDelimiter) />
</cffunction>

<cffunction name="getDistinctArray" returntype="array" access="public">
	<cfargument name="aValues" type="array" required="true" />

	<cfset var sVars = structNew() />

	<cfset sVars.oHashSet = createObject("java", "java.util.LinkedHashSet") />
	<cfset sVars.oHashSet.init(arguments.aValues) />

	<cfreturn sVars.oHashSet.toArray() />
</cffunction>