oose(3) User Contributed Perl Documentation oose(3)

# [SYNOPSIS](#SYNOPSIS)

```
  # create a Moose class on the fly ...
  perl -Moose=Foo -e 'has bar => ( is=>q[ro], default => q[baz] ); print Foo->new->bar' # prints baz
  # loads an existing class (Moose or non-Moose)
  # and re-"opens" the package definition to make
  # debugging/introspection easier
  perl -Moose=+My::Class -e 'print join ", " => __PACKAGE__->meta->get_method_list'
  # also loads Moose::Util::TypeConstraints to allow subtypes etc
  perl -Moose=Person -e'subtype q[ValidAge] => as q[Int] => where { $_ > 0 && $_ < 78 }; has => age ( isa => q[ValidAge], is => q[ro]); Person->new(age => 90)'
```

# [DESCRIPTION](#DESCRIPTION)

oose.pm is a simple source filter that adds "package $name; use Moose; use Moose::Util::TypeConstraints;" to the beginning of your script and was entirely created because typing "perl -e'package Foo; use Moose; ...'" was annoying me.

# [INTERFACE](#INTERFACE)

oose provides exactly one method and it's automatically called by perl:

[**import($package)**](#import%28$package%29)

Pass a package name to import to be used by the source filter. The package defaults to "Class" if none is given.

# [DEPENDENCIES](#DEPENDENCIES)

You will need Filter::Simple and eventually Moose

# [INCOMPATIBILITIES](#INCOMPATIBILITIES)

None reported. But it is a source filter and might have issues there.

# [BUGS](#BUGS)

See "BUGS" in Moose for details on reporting bugs.

2026-10-01 perl v5.44.0

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Document: oose(3pm) from perl-moose 2.4001-r0 (Chainguard OS)
Source: https://github.com/moose/Moose