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  ANSI Common Lisp   14 Conses   14.2 Dictionary of Conses

14.2.3 cons System Class

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:
Section 2.4.1 Left-Parenthesis, Section 22.1.3.5 Printing Lists and Conses

Allegro CL Implementation Details:
None.

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