A quick test indicates it's new in CF9. Worth mentioning that it is NOT treating the assignment as an expression, it is only allowing multiple variables to be assigned to a single expression. Your second test case would fail regardless of which one CF was doing, but this example also fails (meaning it's the latter):
<cfset c=(b=a+1)+1> You can also use assignments in loop conditions. I think Ben blogged about that last summer. cheers, barneyb On Mon, Mar 1, 2010 at 1:33 PM, Michael Dinowitz <mdino...@houseoffusion.com> wrote: > > I think that I missed this in the docs. It seems that you can chain > set variables > > <cfset a=1> > <cfset c=b=a+1> > > This will give you a=1, b=2, c=2. > > On a related note, the following will fail > > <cfset a=1> > <cfset c=b+1=a+1> > > The chain works as long as there is no operation except on the > right-most item in the chain. > > This is all expected behavior in some other languages but I've never > seen it in CF. Anyone know when it was added? > > Please make me look like a fool for missing it. :) > > -- > Michael Dinowitz > -- Barney Boisvert bboisv...@gmail.com http://www.barneyb.com/ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Want to reach the ColdFusion community with something they want? Let them know on the House of Fusion mailing lists Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:331227 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
