15.2.28 svref [Accessor]

svref simple-vector index ⇒ element

(setf ( svref simple-vector index) new-element)

Arguments and Values::

simple-vector—a simple vector.

index—a valid array index for the simple-vector.

element, new-element—an object (whose type is a subtype of the array element type of the simple-vector).

Description::

Accesses the element of simple-vector specified by index.

Examples::

 (simple-vector-p (setq v (vector 1 2 'sirens))) ⇒  true
 (svref v 0) ⇒  1
 (svref v 2) ⇒  SIRENS
 (setf (svref v 1) 'newcomer) ⇒  NEWCOMER               
 v ⇒  #(1 NEWCOMER SIRENS)

See Also::

aref , sbit, schar, vector ,

Compiler Terminology

Notes::

svref is identical to aref except that it requires its first argument to be a simple vector.

 (svref v i) ≡ (aref (the simple-vector v) i)