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円 (setf (elt str 0) #\#) => #\# str => "#123456789"
Side Effects: None.
Affected By: None.
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.