Easy question

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hello, most erudite monks,

I'm just a beginner, so this is probably a dumb question. I'm trying to print out each value of an array. The problem is, the array is inside a hash called %results. To get to that array I use $results{$key}.

  for each $line ($results{$key}) {
    print "\t$line\n";
  }
[download]

When I try to run the program, it prints out something like this: ARRAY(0x1aada0c)

What am I doing wrong?

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Re: Easy question by jettero (Monsignor) on Jul 29, 2009 at 18:09 UTC
print "@{ $hash{$key} }\n"; see perlreftut, perllol, perldata, etc. -Paul	[reply]
Re: Easy question by lostjimmy (Chaplain) on Jul 29, 2009 at 18:46 UTC
In addition to what jettero already said for printing a whole array, you still might be interested to know how to use said array in a for loop. Just a simple change to your code does the trick: `foreach $line (@{$results{$key}}) { print "\t$line\n"; }` [download]	[reply] [d/l]
Re: Easy question by mzedeler (Pilgrim) on Jul 29, 2009 at 19:57 UTC
In addition to the above, if you are completely lost, not knowing the exact structure of some variable, say `$x`, you can dump it like so: `use warnings; use strict; use Data::Dumper; print Dumper $x;` [download]	[reply] [d/l] [select]