Vector Functions

— Function: vectorp object

This function returns t if object is a vector.

          (vectorp [a])
               ⇒ t
          (vectorp "asdf")
               ⇒ nil

— Function: vector &rest objects

This function creates and returns a vector whose elements are the arguments, objects.
          (vector 'foo 23 [bar baz] "rats")
               ⇒ [foo 23 [bar baz] "rats"]
          (vector)
               ⇒ []

— Function: make-vector length object

This function returns a new vector consisting of length elements, each initialized to object.
          (setq sleepy (make-vector 9 'Z))
               ⇒ [Z Z Z Z Z Z Z Z Z]

— Function: vconcat &rest sequences

This function returns a new vector containing all the elements of sequences. The arguments sequences may be proper lists, vectors, strings or bool-vectors. If no sequences are given, the empty vector is returned.
The value is either the empty vector, or is a newly constructed nonempty vector that is not eq to any existing vector.
          (setq a (vconcat '(A B C) '(D E F)))
               ⇒ [A B C D E F]
          (eq a (vconcat a))
               ⇒ nil
          (vconcat)
               ⇒ []
          (vconcat [A B C] "aa" '(foo (6 7)))
               ⇒ [A B C 97 97 foo (6 7)]
The vconcat function also allows byte-code function objects as arguments. This is a special feature to make it easy to access the entire contents of a byte-code function object. See Byte-Code Objects.
For other concatenation functions, see mapconcat in Mapping Functions, concat in Creating Strings, and append in Building Lists.

The append function also provides a way to convert a vector into a list with the same elements:

6.5 Functions for Vectors