nil (original) (raw)
ANSI Common Lisp 4 Types and Classes
4.4 Dictionary of Types and Classes
4.4.1 nil | Type |
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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.