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6.20.3.2 Weak vectors

Scheme Procedure: make-weak-vector size [fill]
C Function: scm_make_weak_vector (size, fill)

Return a weak vector with size elements. If the optional argument fill is given, all entries in the vector will be set to fill. The default value for fill is the empty list.

Scheme Procedure: weak-vector elem …
Scheme Procedure: list->weak-vector l
C Function: scm_weak_vector (l)

Construct a weak vector from a list: weak-vector uses the list of its arguments while list->weak-vector uses its only argument l (a list) to construct a weak vector the same way list->vector would.

Scheme Procedure: weak-vector? obj
C Function: scm_weak_vector_p (obj)

Return #t if obj is a weak vector.

Scheme Procedure: weak-vector-ref wvect k
C Function: scm_weak_vector_ref (wvect, k)

Return the kth element of the weak vector wvect, or #f if that element has been collected.

Scheme Procedure: weak-vector-set! wvect k elt
C Function: scm_weak_vector_set_x (wvect, k, elt)

Set the kth element of the weak vector wvect to elt.