问题描述
使用 Moose :: Meta :: Class-> create 创建元类后，如何实例化一个真正的Moose类作为元类？
（我需要创建元类，因为我也想应用一些角色。）
After creating a metaclass using Moose::Meta::Class->create, how do I instantiate a real Moose class with that class as a metaclass?(I need to create the metaclass also because I also want to apply some roles to it.)
推荐答案
元类是类，当然。如果你想要该类的实例，只需：
The metaclass is the class, of course. If you want an instance of that class, just do:
my $instance = $meta->name->new
您可能还需要确保$ meta不会太快收集。一般来说，您可以这样做：
You might also need to make sure that $meta doesn't get collected too soon. Generally, you do this:
$meta->add_method( meta => sub { $meta } );
这将保持元类，但如果你不是小心。如果你只做这一次，没关系;
That will keep the metaclass around, but you're going to leak the class if you aren't careful. If you only do this once, it won't matter; if you do it thousands of times, you could get yourself into trouble.
更好地使用像 Moose :: Meta这样的更高层次的东西： ：Class :: create_anon_class 或 MooseX :: Traits 。
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