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POHow to make Data::Printer show stringified values in internals?
 

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  1. POHow to make Data::Printer show stringified values in internals?
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    <p>I have some complex object structures, and I use Data::Printer to inspect them. One case where it's not helpful enough is this: when an object (container) has a field that's another object (child), the child shows up in DDP's output only as class name. I wish to also see the stringified value of the child.</p> <p>Let's have an example:</p> <pre><code>{ package Child; use Moo; use overload '""' =&gt; "stringify"; has 'value', is =&gt; 'ro'; sub stringify { my $self = shift; return "&lt;Child:" . $self-&gt;value . "&gt;"; } } { package Container; use Moo; has 'child', is =&gt; 'ro'; } my $child_x = Child-&gt;new(value =&gt; 'x'); print "stringified child x: $child_x\n"; my $child_y = Child-&gt;new(value =&gt; 'y'); print "stringified child y: $child_y\n"; my $container_x = Container-&gt;new(child =&gt; $child_x); my $container_y = Container-&gt;new(child =&gt; $child_y); use DDP; print "ddp x: " . p($container_x) . "\n"; print "ddp y: " . p($container_y) . "\n"; </code></pre> <p>Output:</p> <pre><code>stringified child x: &lt;Child:x&gt; stringified child y: &lt;Child:y&gt; ddp x: Container { Parents Moo::Object public methods (2) : child, new private methods (0) internals: { child Child # &lt;- note this } } ddp y: Container { Parents Moo::Object public methods (2) : child, new private methods (0) internals: { child Child # &lt;- and this } } </code></pre> <p>As you see, the children are indistinguishable in the output. I'd like to see the stringification in that place, either in addition to or instead of the class name.</p>
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