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::

section aref [Accessor] , sbit, schar, section vector [Function] ,

section 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)

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