[Chicago-talk] Multi dimensional hash

[Doug Bell]

What you have there should work. You could also simplify it with loops or slices:

for my $name_key ( qw( FName LName Nickname ) ) {
    $validtn_hash{ Name }{ $name_key } = $input_hash->{ $name_key };
}

# OR
$validtn_hash{ Name }{ $_ } = $input_hash->{ $_ } for qw( FName LName Nickname );

# OR
@{ $validtn_hash{ Name } }{qw( FName LName Nickname )} = @{ $input_hash }{qw( FName LName Nickname )};


Doug Bell
madcityzen at gmail.com



> On Oct 11, 2015, at 3:07 PM, richard at rushlogistics.com wrote:
> 
> If I have the following hash reference:
> 
> my $input_hash = {  
> 
>        Hometown => 'Chicago', 
>        FName => 'Jim',  
>        LName => 'Brown',
>        Nickname => 'Jimbo',
> 
> };
> 
> Is there a way that I can create a multimensional hash like they've done here http://perlmaven.com/multi-dimensional-hashes
> 
> But instead have it structured with the input_hash's key name as one of the dimensions? So that I would have:
> 
> $validtn_hash{class}{input_hash_key} = input_hash value; # where City and Name are examples of classes
> 
> $validtn_hash{"City"}{Hometown} = $input_hash->{Hometown};
> $validtn_hash{"Name"}{FName} = $input_hash->{FName};
> $validtn_hash{"Name"}{LName} = $input_hash->{LName};
> $validtn_hash{"Name"}{Nickname} = $input_hash->{Nickname};
> 
> Or is this even possible? 
> 
> Thanks
> 
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