4.3.2 Pair-of type descriptors

The following syntactic bindings are exported by the library (vicare system type-descriptors).

Record Type: <pair-of-type-descr>

Name of type descriptors for pairs of homogeneous values. It has the following fields:

item-des

A type descriptor describing the type of the car and cdr.

Function: make-pair-of-type-descr item-des

Build and return a new instance of <pair-of-type-descr>.

Function: pair-of-type-descr? obj

Return #t if obj is an instance of <pair-of-type-descr>; otherwise return #f.

Function: pair-of-type-descr.item-des des

Accessor for the field of <pair-of-type-descr> instances.