How to add to an array

mikeabuilder

Say I have an array variable

var.array1 = {0,1,2,3}

Now I want to add another element to the array. Arrays are fixed length, so I need to create a new array with the contents of the first array, plus my new element.

I've tried things like

var array2 = {var.array1,"new element"}
var array2 = {var.array1^"new element"}
var array2 = {{var.array1}^"new element"}
Etc.

But I can't find an expression that uses the elements of array 1 as the first elements of a new array.

OwenD

@mikeabuilder
You can add the first array as the first element of a new array like this

var myArray = {1,2,3,4,}
var myArray2 = {{var.myArray},5}

but that might not make it what you want

You may need to use a loop if you want it all as single elements

;initial array
var myArray = {1,2,3,4,}
echo var.myArray

; second array one element larger
var myArray2 = vector(#var.myArray+1,null)
;copy first to second
while iterations < #var.myArray
   set var.myArray2[iterations] = var.myArray[iterations]

;set last element in second array
set var.myArray2[#var.myArray2-1]=#var.myArray2
echo var.myArray2

;make first array bigger
set var.myArray = vector(#var.myArray+1,null)

; copy second array back into first
set var.myArray = var.myArray2
echo var.myArray

mikeabuilder

@OwenD - VECTOR!!!! Excellent. I didn;t know that was added. It's precisely what I need. It allows me to create an array of a given length that I can then fill (as you demonstrate).

Thanks!