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The following syntactic bindings are exported by the library
(vicare containers queues)
. The syntactic bindings whose name
is prefixed with $
are unsafe operations: they do not
validate their arguments before accessing them.
Analogous to fold-left
for lists. Fold the procedure kons
over the objects from queue, starting from the front.
(define D (queue 0 1 2 3 4 5)) (queue-fold-left (lambda (knil obj) (cons obj knil)) '() D) ⇒ (5 4 3 2 1 0)
Analogous to fold-right
for lists. Fold the procedure kons
over the objects from queue, starting from the rear.
(define D (queue 0 1 2 3 4 5)) (queue-fold-right (lambda (obj knil) (cons obj knil)) '() D) ⇒ (0 1 2 3 4 5)