How can I list all variables that are in a given scope?

Question

I know I can list all of the package and lexcial variables in a given scope using Padwalker's peek_our and peek_my, but how can I get the names and values of all of the global variables like $" and $/?

#!/usr/bin/perl  use strict; use warnings;  use PadWalker qw/peek_our peek_my/; use Data::Dumper;  our $foo = 1; our $bar = 2;  {     my $foo = 3;     print Dumper in_scope_variables(); }  print Dumper in_scope_variables();  sub in_scope_variables {     my %in_scope = %{peek_our(1)};     my $lexical  = peek_my(1);     #lexicals hide package variables     while (my ($var, $ref) = each %$lexical) {         $in_scope{$var} = $ref;     }     ##############################################     #FIXME: need to add globals to %in_scope here#     ##############################################     return \%in_scope; } 

Answer 1

You can access the symbol table, check out p. 293 of "Programming Perl" Also look at "Mastering Perl: http://www252.pair.com/comdog/mastering_perl/ Specifically: http://www252.pair.com/comdog/mastering_perl/Chapters/08.symbol_tables.html

Those variables you are looking for will be under the main namespace

A quick Google search gave me:

{     no strict 'refs';      foreach my $entry ( keys %main:: )     {         print "$entry\n";     } } 

You can also do

*sym = $main::{"/"} 

and likewise for other values

If you want to find the type of the symbol you can do (from mastering perl):

foreach my $entry ( keys %main:: ) {     print "-" x 30, "Name: $entry\n";      print "\tscalar is defined\n" if defined ${$entry};     print "\tarray  is defined\n" if defined @{$entry};     print "\thash   is defined\n" if defined %{$entry};     print "\tsub    is defined\n" if defined &{$entry}; } 

Answer 2

And that does it. Thanks to MGoDave and kbosak for providing the answer in front of my face that I was too stupid to see (I looked in %main:: to start with, but missed that they didn't have their sigils). Here is the complete code:

#!/usr/bin/perl  use strict; use warnings;  use PadWalker qw/peek_our peek_my/; use Data::Dumper;  our $foo = 1; our $bar = 2;  {     my $foo = 3;     print Dumper in_scope_variables(); }  print Dumper in_scope_variables();  sub in_scope_variables {     my %in_scope = %{peek_our(1)};     my $lexical  = peek_my(1);     for my $name (keys %main::) {         my $glob = $main::{$name};         if (defined ${$glob}) {             $in_scope{'$' . $name} = ${$glob};         }          if (defined @{$glob}) {             $in_scope{'@' . $name} = [@{$glob}];         }          if (defined %{$glob}) {             $in_scope{'%' . $name} = {%{$glob}};         }     }      #lexicals hide package variables     while (my ($var, $ref) = each %$lexical) {         $in_scope{$var} = $ref;     }     return \%in_scope; }