The array iterator is specially treated. If you use more 'common' way, it is copied by value: 
$ perl -E 'my @array=qw/1 2 3/; my $first=$array[0]; $first=0; say "ar
+ray: @array"; say "fetched changed: $first";'
array: 1 2 3
fetched changed: 0

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In reply to Re^2: The behavior of array and hash OPs by llancet
in thread The behavior of array and hash OPs by llancet

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