Give a value aHead and a bra-list aTail, compute the bra-list obtained when adding aHead as the head of aTail.
aHead
aTail
a head for the bra-list
a tail for the bra-list
a bra-list with the aforementioned head and tail
Give a value
aHead
and a bra-listaTail
, compute the bra-list obtained when addingaHead
as the head ofaTail
.