What about something like this:
<cffunction
name="GetDiff"
access="public"
returntype="string"
output="false"
hint="Gets the difference between two lists based on index.">
<!--- Define arguments. --->
<cfargument
name="ListOne"
type="string"
required="true"
/>
<cfargument
name="ListTwo"
type="string"
required="true"
/>
<!--- Define the local scope. --->
<cfset var LOCAL = StructNew() />
<!--- Get the length of both lists. --->
<cfset LOCAL.ListOneLength = ListLen( ARGUMENTS.ListOne ) />
<cfset LOCAL.ListTwoLength = ListLen( ARGUMENTS.ListTwo ) />
<!--- Set empty diff list. --->
<cfset LOCAL.DiffList = "" />
<!--- Loop over both lists. --->
<cfloop
index="LOCAL.Index"
from="1"
to="#Max( LOCAL.ListOneLength, LOCAL.ListTwoLength )#"
step="1">
<!--- Check to see if we have an element in list one to
check. --->
<cfif (LOCAL.Index GT LOCAL.ListOneLength)>
<cfset LOCAL.DiffList = ListAppend(
LOCAL.DiffList,
ListGetAt( ARGUMENTS.ListTwo,
LOCAL.Index )
) />
<cfelseif (LOCAL.Index GT LOCAL.ListTwoLength)>
<cfset LOCAL.DiffList = ListAppend(
LOCAL.DiffList,
ListGetAt( ARGUMENTS.ListOne,
LOCAL.Index )
) />
<cfelseif (
ListGetAt( ARGUMENTS.ListOne, LOCAL.Index ) NEQ
ListGetAt( ARGUMENTS.ListTwo, LOCAL.Index )
)>
<cfset LOCAL.DiffList = ListAppend(
LOCAL.DiffList,
ListGetAt( ARGUMENTS.ListTwo,
LOCAL.Index )
) />
</cfif>
</cfloop>
<!--- Return the diff list. --->
<cfreturn LOCAL.DiffList />
</cffunction>
#GetDiff(
"1,2,4",
"1,2,3,4"
)#
......................
Ben Nadel
Certified Advanced ColdFusion MX7 Developer
www.bennadel.com
Need ColdFusion Help?
www.bennadel.com/ask-ben/
-----Original Message-----
From: Joel Watson [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 06, 2007 10:41 AM
To: CF-Talk
Subject: Comparing two arrays or lists
I have two lists that I want to compare and be able to show the
resulting differences. For example, if my first list has 1,2,3,4 and
the second has 1,2,4,4, I want to be able to output that "3" and "4" are
different.
What would be the best way of going about this? I applied the
"arrayCompare" UDF from cflib, but it only outputs a bollean for the
entire comparison. I would like to be able to compare on a more
detailed level and output the results.
Thanks!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|
Deploy Web Applications Quickly across the enterprise with ColdFusion MX7 &
Flex 2.
Free Trial
http://www.adobe.com/products/coldfusion/flex2/
Archive:
http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:271738
Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm
Unsubscribe:
http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
