12.12 Low level pair operations

The arguments P to these operations must be pairs. The following bindings are exported by the library (vicare system $pairs). objects pairs for details of pair representation.

Unsafe Operation: $car P

Return the car of the operand.

Unsafe Operation: $cdr P

Return the cdr of the operand.

Unsafe Operation: $set-car! P value

Store value in the car location of P.

Unsafe Operation: $set-cdr! P value

Store value in the cdr location of P.