6.17.2 Type of weak pair objects

Label Type: <weak-pair>

Parent Type: <pair>

Type of weak pair objects.

Constructor on <weak-pair>: <weak-pair> type-constructor A D

The constructor is weak-cons. Return a new weak pair having A and D as car and cdr.

Type predicate on <weak-pair>: <boolean> type-predicate obj

The type predicate is weak-pair?. Return #t if obj is an immutable pair object; otherwise return #f.