Re: What is the problem here?

On Sat, Sep 29, 2012 at 07:47:01PM +0000, [email protected] wrote:
> 
> I cannot make this work: 
> 
> 
> use MooseX::Declare; 
> 
> 
> class Foo { 
> use Moose::Util::TypeConstraints; 
> subtype 'NewType' => as 'Object'; 
> 
> 
> method bar (NewType $arg) { 
> 
> 
> } 
> } 
> 
> 
> I get the following error: 
> 
> 
> 'NewType' could not be parsed to a type constraint - maybe you need to pre-declare the type with class_type at reader Parse::Method::Signatures::TypeConstraint::tc (defined at /home/yshtil/ lib/perl5/site_perl/5.14.1/Parse/Method/Signatures/TypeConstraint.pm line 20) line 7 

MooseX::Declare requires that type names are available during
compilation, but 'subtype' happens at runtime, which is too late. You
can move your type declaration to a separate type library and 'use' it
in your module, or you can wrap the subtype declaration in a BEGIN
block.

-doy