en
italiano
čeština
Deutsch
français
hrvatski
magyar
polski
српски
русский
中文
中文
한국어
español(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 the = (equal to operator) and equal(equal statement1 statement2 [tolerance])(IDR_166)functions. The = function returns T when two numbers or strings are equal. The equal function returns T when two expressions are equal. The eq function returns T when two expressions are bound to the same symbol.