svref

svref Accessor

Syntax:

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, Section 3.2.1 (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)

Expanded Reference: svref

tip

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(svref )