You want to stop after you have
- looked at N elements, or
- reached the end of the array.
You have chosen to put the "N elements" idea in the loop control and add a test for the end of the array. How about reversing this? Looping over an array is so easy in Perl. Adding a counter to quit after N elements is not much harder.
use constant N => 3;
my $counter;
my @a = 'A' .. 'Z';
$counter = 1;
ELEMENT:
foreach my $val (@a) {
last ELEMENT if $counter++ > N;
print "Looking at $val\n";
}
Looking at A
Looking at B
Looking at C
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