Syntax

Array Declaration

Array is declared using var / const keyword followed by the array name and a mandatory Type Clause ending with []:

var arr : int[] = {1, 2, 3, 4, 5}

Ways of declaring an array

• Providing both declaration with size and initialization. Declared size and initialization size should be same.

var arr : int[5] = {1, 2, 3, 4, 5}

• Providing only declaration. In this case, it is mandatory to provide the size of the array.

var arr : int[5]

• Providing only declaration and initialization. In this case, the size of the array is automatically calculated.

var arr : int[] = {1, 2, 3, 4, 5}

Accessing Array Elements

Array elements are accessed using the array name followed by the index enclosed in square brackets []:

var arr : int[] = {1, 2, 3, 4, 5}
vax x : int = arr[0]
// x = 1

Assigning Array Elements

Array elements are assigned using the array name followed by the index enclosed in square brackets []:

var arr : int[] = {1, 2, 3, 4, 5}
arr[0] = 10 
// {10, 2, 3, 4, 5}

Array Length

Array length is accessed using the size in-built function:

var arr : int[5] = {1, 2, 3, 4, 5}
var len : int = size(arr)
// len = 5