I think a clean and clear way to do this is with a while loop, maintaining your own index. Something like this: 
my $i = 0;
while ($i <= $#foo)
{
    push @foo, 'h' if $foo[$i] eq 'd';
    print $foo[$i];
    $i++;
}

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In reply to Re: changing array size in foreach loop: is it safe? by blahblahblah
in thread changing array size in foreach loop: is it safe? by Errto

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