Array

Help Contents Data Structure Primitives Constructors Array
lPut IntArray

Array size
(Array size origin)
Array alist
Array aintarray
Array aint16array
Array anarray

outputs an array of "size" members (must be a positive integer), each of which initially is an empty list. Array members can be selected with Item and changed with setItem. The first member of the array is member number 1 unless an "origin" input (must be an integer) is given, in which case the first member of the array has that number as its index. (Typically 0 is used as the origin if anything.) Arrays are printed by print and friends, and can be typed in, inside curly braces. @ indicates an origin.

This primitive also can be used to convert alist, aint16array or aintarray to an array, and to clone the array anarray. That means in detail, the array of pointers to the items will be copied, but not the items: so if you want to get a completly new deep data structure, you'll have to use deepcopy instead.

Examples: 

show array 3		;{[] [] []}
show (array 3 0)		;{[] [] []}@0
show {h a l l o}		;{h a l l o}
show {a b c}@2		;{a b c}@2
show Item 3 {a b c}@2	;b

a={H a l l o}
setItem 2 a "e
show a		;{H e l l o}
Array [1 2 3]	;{1 2 3}  ;-)
Array intarray [1 2 3]	;{1 2 3}  ;-)
Array int16array [1 2 3]	;{1 2 3}  ;-)

Examples:

References:

lPut IntArray