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System Class CONS

Class Precedence List

cons, list, sequence, t

Description

A cons is a compound object having two components, called the car and cdr. These form a dotted pair. Each component can be any object.

Compound Type Specifier Kind

Specializing.

Compound Type Specifier Syntax

cons [car-typespec [cdr-typespec]]

Compound Type Specifier Arguments

car-typespec---a type specifier, or the symbol *. The default is the symbol *.

cdr-typespec---a type specifier, or the symbol *. The default is the symbol *.

Compound Type Specifier Description

This denotes the set of conses whose car is constrained to be of type car-typespec and whose cdr is constrained to be of type cdr-typespec. (If either car-typespec or cdr-typespec is *, it is as if the type t had been denoted.) ====See Also==== {\secref\LeftParen}, {\secref\PrintingListsAndConses} \issue{CONS-TYPE-SPECIFIER:ADD}