Re^2: keys %::

Is there anyway to find out what the typeglobs really are? (i.e, its scalar value, array value, etc.)

Each slot in the GLOB, if defined, contains a reference to the actual value. The following works for looking up scalars, arrays, and hashes:

for my $g(sort keys %::) { 
  print "$g:\n"; 
  if(defined( *{$g}{SCALAR} ) ) { 
    print "  SCALAR: ", ${ *{$g}{SCALAR} }, "\n"; 
  } 
  if(defined( *{$g}{ARRAY} ) ) { 
    print "  ARRAY: ", join ", ", @{ *{$g}{ARRAY} }, "\n"; 
  } 
  if(defined( *{$g}{HASH}  ) ) { 
    print "  HASH: "; 
    while(my ($k, $v) = each %{ *{$g}{HASH} } ) { 
      print "$k => $v, " 
    } 
  } 
  print "\n" 
}
[download]

Comment on Re^2: keys %:: Download Code

Replies are listed 'Best First'.
Re^3: keys %:: by Sec (Monk) on Jul 20, 2005 at 12:43 UTC
I have improved this script a bit, it can recurse into symbol tables now. I learned something new today. Internals::SvREADONLY can reset the readonly flag :) my $table=shift\|\|''; $table.="::"; dumptable($table); sub dumptable{ my $table=shift; my $indent=shift\|\|''; while (my ($key,$value)=each %$table ){ print qq!$indent"$key":\n!; if(defined({$value}{SCALAR}) and defined(${ {$value}{SCALAR}})){ print "$indent\tSCALAR: ",${{$value}{SCALAR}}, "\n"; } if(defined( {$value}{ARRAY} ) ) { print "$indent\tARRAY: ", join ", ",@{{$value}{ARRAY}}, "\n"; } if(defined( {$value}{HASH} ) ) { if ($key =~ /::$/){ print "$indent\tSYMTAB:\n"; dumptable($value,"\t".$indent) if ({$value}{NAME} ne "main::"); }else{ print "\tHASH:\n"; while(my ($k, $v) = each %{ {$value}{HASH} } ) { print "$indent\t\t$k => $v,\n" } } } if(defined( {$value}{CODE} ) ) { print "$indent\tCODE: ",{$value}{CODE},"\n"; }; if(defined( {$value}{IO} ) ) { print "$indent\tIO: ",{$value}{IO},"\n"; }; print "\n" } } [download]	[reply] [d/l]

Replies are listed 'Best First'.

Re^3: keys %::
by Sec (Monk) on Jul 20, 2005 at 12:43 UTC

my $table=shift||'';
$table.="::";

dumptable($table);

sub dumptable{
my $table=shift;
my $indent=shift||'';
while (my ($key,$value)=each %$table ){
    print qq!$indent"$key":\n!;
    if(defined(*{$value}{SCALAR}) and defined(${ *{$value}{SCALAR}})){
        print "$indent\tSCALAR: ",${*{$value}{SCALAR}}, "\n";
    }
    if(defined( *{$value}{ARRAY} ) ) {
        print "$indent\tARRAY: ", join ", ",@{*{$value}{ARRAY}}, "\n";
    }
    if(defined( *{$value}{HASH}  ) ) {
        if ($key =~ /::$/){
            print "$indent\tSYMTAB:\n";
            dumptable($value,"\t".$indent)
                if (*{$value}{NAME} ne "main::");
        }else{
            print "\tHASH:\n";
            while(my ($k, $v) = each %{ *{$value}{HASH} } ) {
                print "$indent\t\t$k => $v,\n"
            }
        }
    }
    if(defined( *{$value}{CODE}  ) ) {
        print "$indent\tCODE: ",*{$value}{CODE},"\n";
    };
    if(defined( *{$value}{IO}  ) ) {
        print "$indent\tIO: ",*{$value}{IO},"\n";
    };
    print "\n"
}
}
[download]

[reply]
[d/l]