Creating an Array: Difference between revisions

There are two type of [numerical indexed] arrays in Otus Lisp. The vectors and tuples.

Vectors can by byte-vectors (aka raw vectors), and regular vectors.

Byte-vectors do access to elements by integer index started from 0. Vectors and tuples do access to elements by integer index started from 1.

<lang ol>

;; vector

(define v (vector 1 2 3 4 5 6 7 8 9))

(print v)

; ==> #u8(1 2 3 4 5 6 7 8 9)

(define vx (vector 9999999999 8888888888))

(print vx)

; ==> '#(9999999999 8888888888)

(print (ref v 3))

; ==> 4

(print (ref vx 2))

; ==> 8888888888

(print (byte-vector? v))

; ==> #true

(print (byte-vector? vx))

; ==> #false

</lang>

<lang ol>

;; tuples

(define t (tuple 1 2 3 4 5 6 7 8 9))

(print t)

; ==> #[1 2 3 4 5 6 7 8 9]

(print (ref t 7))

; ==> 7

</lang>