Actually, mutable cons cells are in PLT, they're just created using mcons instead of cons, and accessed with mcar/mcdr. While this does make porting code a bit difficult, it's a very old change - Matthew's original blog…
Actually, mutable cons cells are in PLT, they're just created using mcons instead of cons, and accessed with mcar/mcdr. While this does make porting code a bit difficult, it's a very old change - Matthew's original blog…