In Lisp, vectors are allocated at runtime as needed. In many languages, vectors must be pre-declared at compile time.
(make-vector k )
(make-vector k fill )
make a vector of length k whose initial contents are fill.
The elements of the vector are numbered from 0 to k - 1.
(vector? obj )
tests whether obj is a vector.
'#( element_0 ... element_k-1 )
can be used to sepcify a constant vector.
Example: '#(0 (2 2 2 2) "Anna")
(vector element_0 ... element_k-1 )
creates a vector with a fixed number of elements.