Re: .vimrc for perl programmers

[tinita]

• :imap dumper <ESC>^iwarn Data::Dumper->Dump([\<ESC>llyw$a], ['<ESC>pa']);<ESC>
  lets you type '@myarraydumper' and you'll get 'warn Data::Dumper->Dump([\@myarray], ['myarray']);
• map ß O#!/usr/local/bin/perl<CR><ESC>iuse strict;<CR><ESC>iuse warnings;<CR>
• (un)comment: (update: this also works in visual mode. just select the block and type §1)

  map §1 :s/^/# /<CR>
  map §2 :s/^# //<CR>
  

[demerphq]

Youll get more accurate results on self referential structures by using

warn Data::Dumper->Dump(sub{\@_}->(\@myarray), ['myarray'])

it doesnt make that much difference when the example is an array, but when its a scalar it does make a lot of difference.

Alternatively install Data::Dump::Streamer and get prettier, easier to read and more accurate dumps outright.

Yes, this is a shameless plug. :-)

[mreece]

can you provide an example where this (undocumented?) syntax makes a difference?

[demerphq]

Looks like its been superficially improved so there is no difference anymore, which is good. But the output is still wrong, which is bad. For $x=\$y; $y=\$x; the raw call to Data::Dumper->Dump([$x,$y]) used to produce:

$VAR1 = [
          \\$VAR1->[0],
          ${$VAR1->[0]}
        ];

But now it produces what Data::Dumper::Dumper (and what the sub{\@_} trick does) produce:

$VAR1 = \\$VAR1;
$VAR2 = ${$VAR1};

Wheras Data::Dump::Streamer::Dump produces the correct output:

$REF1 = \$REF2;
$REF2 = \$REF1;

Hope that explains things.

[cees]

For commenting and uncommenting code (in perl and many other languages) have a look at the BlockComment plugin.