declaring-arrays.md

Declaring arrays

Declaring one-dimensional arrays

A one dimensional fixed array is created either via an array literal or via appending [] to the type of the variable with the size or *(for an infinite array) between the brackets. If no variable type is given, the type array is infered on first use and the variable will be an infinite array

Example

with console from std:io

var hello = {"Hello","world"} //type of the array is infered here, fooBar is now a string[2]
console.out(hello[0] + hello[1]) //Output: Hello world

var fooBar
fooBar[0] = 10 //type of the array is infered here, fooBar is now an int[*]
fooBar[1] = 20

var fib int[10] = {1,1,2,3,5,8,13,21,34,55}

var barFoo
barFoo[0] = null //type of the array is infered here, barFoo is now an object[*]

let text string[*] = console.in().split(" ")

Declaring arrays with mixed types

An array of *any can contain data of multiple types. This means that the array can be used as a tuple.

var arr *any[2]
arr = {:ok, "Hello world"}

let result = {1, true, 20.231}

Declaring multi-dimensional arrays

The syntax of creating multi-dimensional arrays is similar to that of creating one-dimensional arrays. But instead of a single size, you put the size of each dimension between the brackets seperated by a , .

Example

var matrix int[3,3] = {{1,0,0},{0,1,0},{0,0,1}}

var names = {{"John", "Greg"}, {"Anna", "Susan"}} //type of the array is infered here, names is now a string[2.2]

let a int[*] = {{3,7,3,0},{0,2,-1,1},{5,4,3,2},{6,6,4,-1}}

Arrays of nullable types

Making an array nullable is done in the same way as making a variable nullable: you put a ? in front of the datatype or let the interpreter infer the array type.

Example

var 3dArray int?[2,2,2] = {{{1,2},{3,null}},{{null,6},{7,8}}}

var strings = {null, "Hello","World"} //type of the array is infered here, strings is now a string?[3]