Thank you for the response. I do know about using references, I have used them here and there to pass something to a function that was not in that function's scope. That's not really what I am looking for here. I was not clear enough. I just really wonder whether it is more efficient to set up my array at point A, or point B in the pseudocode below which is trying illustrate my question:
#!/usr/bin/perl -w
use strict;
my @bigarray = ("insert", "a very", "long list here");#point A
my $thing1 = mySub();
my $thing2 = mySub();
#...etc - using mySub repeatedly
sub mySub {
#point B - should I declare my @bigarray here instead, and why?
for (@bigarray){
#do stuff with array
}
}