| MooseX::OneArgNew(3) | User Contributed Perl Documentation | MooseX::OneArgNew(3) |
SYNOPSIS
In our class definition:
package Delivery;
use Moose;
with('MooseX::OneArgNew' => {
type => 'Existing::Message::Type',
init_arg => 'message',
});
has message => (isa => 'Existing::Message::Type', required => 1);
has to => (
is => 'ro',
isa => 'Str',
lazy => 1,
default => sub {
my ($self) = @_;
$self->message->get('To');
},
);
When making a message:
# The traditional way:
my $delivery = Delivery->new({ message => $message });
# or
my $delivery = Delivery->new({ message => $message, to => $to });
# With one-arg new:
my $delivery = Delivery->new($message);
DESCRIPTION
MooseX::OneArgNew lets your constructor take a single argument, which will be translated into the value for a one-entry hashref. It is a parameterized role with three parameters:
WARNINGS
You can apply MooseX::OneArgNew more than once, but if more than one application's type matches a single argument to "new", the behavior is undefined and likely to cause bugs.
It would be a very bad idea to supply a type that could accept a normal hashref of arguments to "new".
| 2026-06-28 | perl v5.42.2 |