How to prepend an element to array

table.insert(arr, 1, 'val')

table.insert - will append given value to the given array
arr - array to append value to
'val' - value to append to array
, 1 - will insert new value at the beginning (first element) of the array

group: array_add

Example:

arr = {2, 3}
table.insert(arr, 1, 1)
print(table.concat(arr, ', '))

1, 2, 3

link_youtube: https://youtu.be/4SN3NkPB78k