nil (original) (raw)

ANSI Common Lisp 4 Types and Classes 4.4 Dictionary of Types and Classes

Supertypes:

all types

Description:

The type nil contains no objects and so is also called the empty type. The type nil is a subtype of every type. No object is of type nil.

Notes:

The type containing the object nil is the type null, not the type nil.

Allegro CL Implementation Details:

None.