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(eq statement1 statement2)


Determine whether two expressions are bound to the same symbol.


This function determines whether two expressions are bound to the same symbol. If so, eq returns T; if not, eq returns nil.

Examples

Code Comments
(setq s1 '(1 2 3)) Create symbol s1.
(setq s2 '(1 2 3)) Create symbol s2.
(setq s3 s2) Bind s2 to s3.
(eq s1 s3) nil because s1 and s3 are not the same list.
(eq s3 s2) T because s3 and s2 are the same list.

NOTE The eq function is not the same as theeq function returns T when two expressions are bound to the same symbol.

(boundp item)

(setq symbol1 statement1 [symbol2 statement2] ...)

LISP Compatibility

Programming Overview of LISP (LISt Processing) Language

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