Re^2: Dumping variables but DRY and simple

yes .... I saw it some days ago...but

Returns a string containing a Perl expression. If you pass this string to Perl’s built-in eval() function it should return a copy of the arguments you passed to dump().

didn't encourage me a lot, wrapping all in evals is not what I really wanted.

But maybe I'm wrong, can you show me example code?

Cheers Rolf

Comment on Re^2: Dumping variables but DRY and simple

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Re^3: Dumping variables but DRY and simple by rubasov (Friar) on Mar 27, 2010 at 14:58 UTC
`eval()` is needed only when you want a deep copy. use Data::Dump qw( pp dd ); my $ref = [ 'foo', 'bar', { asd => 1, qwe => 2 } ]; # pp() called in void context prints to STDERR pp $ref; # prints: ["foo", "bar", { asd => 1, qwe => 2 }] # dd() called in void context prints to STDOUT dd $ref; # named printing is still not DRY, but much better than: # print Data::Dumper->Dump( [$ref], ['*ref'] ); print '$ref = ', pp($ref), "\n"; # prints: $ref = ["foo", "bar", { asd => 1, qwe => 2 }] # eval() for a deep copy my $deep_copy = eval pp($ref); pp $deep_copy; [download] The printing format is a lot more readable than Data::Dumper's default. However beware that Data::Dump is not among the core modules.	[reply] [d/l] [select]
Re^4: Dumping variables but DRY and simple by LanX (Saint) on Mar 27, 2010 at 15:05 UTC
`# named printing is still not DRY, but much better than: # print Data::Dumper->Dump( [$ref], ['*ref'] ); print '$ref = ', pp($ref), "\n";` [download] yeah but thats core... `use Data::Dumper qw/Dumper/; print '$ref = ', Dumper($ref), "\n";` [download] So really a big gain if it's not DRY? Cheers Rolf	[reply] [d/l] [select]
Re^5: Dumping variables but DRY and simple by rubasov (Friar) on Mar 27, 2010 at 15:14 UTC
When used during development (when Data::Dump should be installed only on my machine) I think every saved keystroke is a big gain. Although when I want to distribute the resulting code (eg. using for a deep copy, not just debug printing) then it is not.	[reply]
Re^3: Dumping variables but DRY and simple by ikegami (Patriarch) on Mar 27, 2010 at 15:59 UTC
Same goes for Data::Dumper. If you want to reify the structure, you need to use `eval`. As far as I'm concerned, they are debugging tools, not storage tools.	[reply] [d/l]