in reply to Re^2: how many elements in array?
in thread how many elements in array?

Although, technically, they actually could produce the same thing, if one were to modify $[ to be 1

Update: Just a caveat that this is not recommended in the slightest :) as the docs for index say:
The return value is based at 0 (or whatever you've set the $[ variable to--but don't do that).
"But what of all those sweet words you spoke in private?"
"Oh that's just what we call pillow talk, baby, that's all."