Array Length

[sumone4life]

This is going to sound like a rediculous newbie question but i really cant find it anywhere. How do i get the index of the last term in an array?

[xcal]

Ubound($array) - 1

[sumone4life]

what is the -1 for? ive seen that a couple times and i dont understand what it is for.

[qazwsx]

because an array starts at $array[0] not $array[1]

[mikehunt114]

Arrays in AutoIt use a 0-based index. That means the first element is #0. This then means that the index of the last element would be one less than the actual number of elements. Like so:

$array[0] = "first element"

$array[1] = "second element"

$array[2] = "third and last element"

Ubound($array) would return 3, the total number of elements. To access the 3rd element ($array[2]), you would use an index of 2, hence the -1.

Edit: typos

Edited August 1, 2007 by mikehunt114