I don't get it. When Purity=0 DD, doesn't claim to reevaluate correctly and it's frequently more readable. When Purity=1, it seems to work perfectly for me.
Here's something that takes your examples above, DDDumps them with Purity=1 and reevals the string and then shows the Streamer version of the original and of the evaled.
use Data::Dumper;
use Data::Dump::Streamer;
$Data::Dumper::Purity=1;
my ($x,$y);
$x=\$y;
$y=\$x;
test([$x, $y]);
my $ary=[];
$ary->[0]=\$ary->[1];
$ary->[1]=\$ary->[0];
test($ary);
sub test
{
my $VAR1;
my $s = shift;
my $d = Dumper($s);
my $s2 = eval "$d;\$VAR1";
die $@ if $@;
print "original---------------\n";
print Dump($s);
print "DDed---------------\n";
print Dump($s2);
print "\n"
}
__END__
original---------------
$ARRAY1 = [
\do { my $v = 'V: $ARRAY1->[1]' },
\do { my $v = 'V: $ARRAY1->[0]' }
];
${$ARRAY1->[0]} = $ARRAY1->[1];
${$ARRAY1->[1]} = $ARRAY1->[0];
DDed---------------
$ARRAY1 = [
\do { my $v = 'V: $ARRAY1->[1]' },
\do { my $v = 'V: $ARRAY1->[0]' }
];
${$ARRAY1->[0]} = $ARRAY1->[1];
${$ARRAY1->[1]} = $ARRAY1->[0];
original---------------
$ARRAY1 = [
'R: $ARRAY1->[1]',
'R: $ARRAY1->[0]'
];
$ARRAY1->[0] = \$ARRAY1->[1];
$ARRAY1->[1] = \$ARRAY1->[0];
DDed---------------
$ARRAY1 = [
\do { my $v = 'V: $ARRAY1->[1]' },
\do { my $v = 'V: $ARRAY1->[0]' }
];
${$ARRAY1->[0]} = $ARRAY1->[1];
${$ARRAY1->[1]} = $ARRAY1->[0];
The first one comes out identical. The second one is not textually identical but if ${$x} = $y means the same thing as $x = \$y then I can't see what DD did wrong. Do they mean the same thing?
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