Hi PerlMonks, I am a beginner in Moose(X) trying to create a collection of some predefined my types. 
use MooseX::Declare

class MyCollection {
  has 'items' => (
    is => 'rw',
    isa => 'HashRef[Object]',
    traits => ['Hash'],
    defaults => sub { {} }
  )

    some..methods
}

use MooseX::Declare;

class Child {
  has 'name' => (
    is => 'rw',
    isa => 'Str'  
  );

  some..methods 
}

use MooseX::Declare;
use MyCollection

class Parent {

  has 'children => (
    is => 'rw',
    isa => 'MyCollection'
  )

  some..methods
}

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So I would like to have in class Parent->children the Collection of child. How to specify that 'children' => isa 'MyCollection[Child]' I try to do so but with no luck. Got and error. Then I try to create a subtype look like 
subtype 'MyChildrenCollection' 
=> as 'Collection', 
where => { $_->isa('Child') }

[download]
and use in 
has 'children' => (is => 'rw', 'isa' => 'MyChildrenCollection'

[download]
but again no luck. Please dear PerlMontks give me your advice Thanks in advance

In reply to Moose(X) create my own Collection by ragnaev

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