On Thu, Sep 3, 2015 at 9:42 AM, Gary Stainburn
<gary.stainb...@ringways.co.uk> wrote:
> I have a hash of hashes which I converted to an array of hashes because I
> needed to access them in a specific sequence. It now looks like
>
> my @pagetypes=(
> {'pagetype'=>'Delivery Note','weight'=>2,.....
> {'pagetype'=>'Sales Invoice','weight'=>2,.....
> {'pagetype'=>'Purchase Invoice','weight'=>2,.....
> ..........
>
> I then access the array using
>
> foreach my $pt (@pagetypes) {
>
>
> However, I have now lost the ability to access each pagetype by it's name
>
> I am aware that you cannot define a key sequence when defining a hash.
> However, if I create a sequence field
>
> my %pagetypes=(
> 'Delivery Note'=>{'seq'=>1,weight'=>2,.....
> 'Sales Invoice'=>{'seq'=>2,'weight'=>2,.....
> 'Purchase Invoice'=>{'seq'=>3,'weight'=>2,.....
> ..........
>
> How can I do the foreach statement to access them in the correct sequence?
>
If the 'seq' items just maintain insertion order, then:
use Tie::IxHash;
use feature 'say';
tie( my %pagetypes, 'Tie::IxHash') or die $!;
%pagetypes=( 'Delivery Note' => ..., Foo=>, Bar=>);
foreach my $pagetype (keys %pagetypes) { ... }
say $pagetypes{'Delivery Note'}{weight};
--
Charles DeRykus
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