Hi kjcdb8er, I just set up a little test to prove the fast assignment and reassignment of values in the array: 
# 858508.pl
use strict;
use warnings;
use 5.010;

my @array_old = my @array = ( 1 .. 10e3 );

for my $i ( 0 .. $#array ) {
    my $buffer = $array[$i];
    $array[$i] = new_value();
    $array[$i] = $buffer;
 }

if( @array_old ~~ @array ) {
    say "arrays are equal";
} 
else {
    say "array are different";
}


sub new_value {
     rand();
}

[download]
This code creates an array of consequtive numbers from 1 to 10000 and changes every number to a random value and restores the initial value. I wasn't able to reproduce your problem. I suppose the problem you are facing is located on the different code part as you showed.

In reply to Re^3: volatile memory? by wwe
in thread volatile memory? by Anonymous Monk

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