id	summary	reporter	owner	description	type	status	priority	milestone	component	resolution	keywords	cc	planetversion	pltversion
133	Use of {{{set-cdr!}}}	untyped	jim	"Hi Jim,

Webit! uses {{{set-cdr!}}}, which is no longer possible in PLT 4 now cons cells are immutable by default. I believe you have the option of switching over to mutable cons cells or removing all mutation. More information here:

{{{
http://blog.plt-scheme.org/2007/11/getting-rid-of-set-car-and-set-cdr.html
}}}

Many thanks,

-- Dave Gurnell
www.untyped.com
"	defect	new	major		jim/webit.plt		cons, immutable, set-car!, set-cdr!			4.1.2.2