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POIs there an equivalent to the perl debugger 'x' in pdl2 (or Devel::REPL)?
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  1. POIs there an equivalent to the perl debugger 'x' in pdl2 (or Devel::REPL)?
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    copied!<p>I am using <code>pdl2</code> (the <a href="http://p3rl.org/PDL" rel="nofollow"><code>PDL</code></a> shell) also as a my default Perl interactive shell (it loads all the nice plugins for <a href="http://search.cpan.org/perldoc/Devel%3a%3aREPL" rel="nofollow"><code>Devel::REPL</code></a>). But I am missing the <code>x</code> dumper-printing alias. <code>p</code> is nice for piddles but it does not work for a normal array ref or hash ref. I have loaded <a href="http://p3rl.org/Data%3a%3aDumper" rel="nofollow"><code>Data::Dumper</code></a> but it lacks an easy way of controlling depth and I like the way you can quickly set depth limits with <code>x</code>, e.g. <code>x 2 $deep_datastruct</code> for complex data structures. But with <code>Data::Dumper</code> the process is more cumbersome:</p> <pre><code>pdl&gt; say $c HASH(0x53b0b60) pdl&gt; p $c HASH(0x12b14018) pdl&gt; use Data::Dumper pdl&gt; p Dumper $c $VAR1 = { 'c' =&gt; { 'c' =&gt; 3, 'a' =&gt; 1, 'b' =&gt; { 'c' =&gt; '3', 'a' =&gt; '1', 'b' =&gt; '2' } }, 'a' =&gt; 1, 'b' =&gt; 4 }; pdl&gt; $Data::Dumper::Maxdepth = 1; pdl&gt; p Dumper $c $VAR1 = { 'c' =&gt; 'HASH(0x97fba70)', 'a' =&gt; 1, 'b' =&gt; 4 }; </code></pre> <p>In the Perl <a href="http://p3rl.org/debug" rel="nofollow">debugger</a> you can achieve the same thing with <code>x 1 $c</code> directly. Does <code>pdl2</code> have something similar and so concise?</p> <p><strong>[update]</strong> And related with this question: does <code>pdl2</code> or <code>Devel::REPL</code> have convenience functions like the Perl debugger commands <code>m</code> or <code>y</code>? Or should one create a module with <a href="http://search.cpan.org/perldoc/PadWalker" rel="nofollow"><code>PadWalker</code></a> and export them? I would like to use a real REPL instead of the Perl debugger as an interactive shell, but still the Perl debugger has some important things that I don't know how to do with <code>Devel::REPL</code> or <code>pdl2</code>.</p> <p>For example to see all variables (<code>pdl2</code> only show piddles):</p> <pre><code>pdl&gt; help vars PDL variables in package main:: Name Type Dimension Flow State Mem ---------------------------------------------------------------- no PDL objects in package main:: </code></pre> <p>By the way, does someone know a <code>Devel::REPL</code> plugin for listing all the variables in use (like <code>y</code> in the debugger, but only the names, not the values) and then have a <code>x</code>-like to dump the wanted one?</p>
 

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