Probably overkill for what you want, but it handles a mix of nested hashes and arrays, and a few other refs as well.
sub traverse(&$) {
my( $code, $ref ) = @_;
my $d;
$d = {
SCALAR => sub{
my $code = shift; my $ref = shift;
return $code->( @_, $$ref );
},
ARRAY => sub {
my $code = shift; my $ref = shift;
map $d->{ ref $ref->[ $_ ] }->( $code, $ref->[ $_ ], @_, $
+_ ),
0 .. $#$ref;
},
HASH => sub {
my $code = shift; my $ref = shift;
map $d->{ ref $ref->{ $_ } }->( $code, $ref->{ $_ }, @_, $
+_ ),
keys %$ref;
},
REF => sub{
my $code = shift; my $ref = shift;
return $d->{ ref $$ref }->( $code, $$ref, @_ );
},
CODE => sub{
my $code = shift; my $ref = shift;
return $d->{ '' }->( $code, "$ref", @_ );
},
'' => sub{
my $code = shift; my $ref = shift;
return $code->( @_, $ref );
},
};
return $d->{ ref $ref }->( $code, $ref );
}
traverse { print join ',', @_ } \%hash;
You can also use it like this to build an array:
my @strings = traverse{ join',', @_ } \%HorAofHorA;
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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