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Think about Loose Coupling
 
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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

In reply to Re: Avoiding vivification with array slice by Narveson
in thread Avoiding vivification with array slice by jbert

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