Movatterモバイル変換

Syntax:

quoteobject =>object

Arguments and Values:

object---anobject; not evaluated.

Description:

Thequotespecial operator just returnsobject.

The consequences are undefined ifliteralobjects (includingquoted objects) are destructively modified.

Examples:

 (setq a 1) =>  1 (quote (setq a 3)) =>  (SETQ A 3) a =>  1 'a =>  A ''a =>  (QUOTE A)  '''a =>  (QUOTE (QUOTE A)) (setq a 43) =>  43 (list a (cons a 3)) =>  (43 (43 . 3)) (list (quote a) (quote (cons a 3))) =>  (A (CONS A 3))  1 =>  1 '1 =>  1 "foo" =>  "foo" '"foo" =>  "foo" (car '(a b)) =>  A '(car '(a b)) =>  (CAR (QUOTE (A B))) #(car '(a b)) =>  #(CAR (QUOTE (A B))) '#(car '(a b)) =>  #(CAR (QUOTE (A B)))

Affected By: None.

Exceptional Situations: None.

See Also:

Section 3.1 (Evaluation),Section 2.4.3 (Single-Quote),Section 3.2.1 (Compiler Terminology)

Notes:

The textual notation'object is equivalent to(quoteobject); seeSection 3.2.1 (Compiler Terminology).

Someobjects, calledself-evaluating objects, do not require quotation byquote. However,symbols andlists are used to represent parts of programs, and so would not be useable as constant data in a program withoutquote. Sincequote suppresses theevaluation of theseobjects, they become data rather than program.

• CONSTANT-MODIFICATION:DISALLOW