Ad 3: As
Moose introduces some types (but no compile time checking, sorry), you can simulate kind of Generics with parameterized roles:
#!/usr/bin/perl
use warnings;
use strict;
{ package MyCollection;
use MooseX::Role::Parameterized;
parameter name => (
isa => 'Str',
required => 1,
);
parameter member_type => (
isa => 'Str',
required => 1,
);
role {
my $p = shift;
has $p->name => (is => 'ro', isa => 'ArrayRef[' . $p->member_t
+ype . ']');
};
};
{ package MyClass;
use Moose;
with MyCollection => { name => 'list', member_type => 'Int' };
__PACKAGE__->meta->make_immutable;
}
my $obj = 'MyClass'->new(list => [ 1, 2, 3 ]);
my $invalid = 'MyClass'->new(list => [ 1, 2, 3.14 ]); # Throws as 3.14
+ is not an Int.
($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,
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