Flexible host + uri redirector with data-groups

BTW - Is the only way to use the [class startsearch $cn], [class anymore $cn $id], class donesearch $cn $id and get the current element, to use a counter? Something like this...

set cn redirect_302_nokeep
set id [class startsearch $cn]
set i 0

while { [class anymore $cn $id] } {

  set n [class element $i $cn]

  set u [lindex $n 0]
  set r [lindex $n 1]

   Do some stuff with the CURRENT values

  set i [expr {$i + 1}]
}
class donesearch $cn $id

I assume I could do a foreach too? not sure if that would be a lot slower? Something like this

set cn redirect_302_nokeep
foreach { e } { [class names $cn] } {

  set u [lindex $e 0]
  set r [lindex $e 1]

   Do some stuff

}