in reply to print every nth element of an array.

@a = 0 .. 19;; $n = 4;; say "$_ => $a[ $_ ]" for map $_ * $n, 0 .. ( $#a / $n );; 0 => 0 4 => 4 8 => 8 12 => 12 16 => 16

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.