Skip to main content

elt

elt Accessor

Syntax:

elt sequence index → object

(setf (elt sequence index**)** new-object**)**

Arguments and Values:

sequence—a proper sequence.

index—a valid sequence index for sequence.

object—an object.

new-object—an object.

Description:

Accesses the element of sequence specified by index.

Examples:

(setq str (copy-seq "0123456789")) → "0123456789" 
(elt str 6) → #\6 
(setf (elt str 0) #\#) → #\# 
str → "#123456789"

Exceptional Situations:

Should be prepared to signal an error of type type-error if sequence is not a proper sequence. Should signal an error of type type-error if index is not a valid sequence index for sequence.

See Also:

aref, nth, Section 3.2.1 (Compiler Terminology)

Notes:

aref may be used to access vector elements that are beyond the vector ’s fill pointer .

Expanded Reference: elt​

tip

TODO: Please contribute to this page by adding explanations and examples

(elt )