On Oct 18, 2011, at 11:09 AM, Elliot Shank wrote:
> On 10/18/11 10:02 AM, Peter Gordon wrote:
>> I would like to be able to define package MyRole such that when it is
>> invoked, runMe() gets run automatically without having to run
>> it explicitly in package Y.
>
> This has nothing to do with Moose. It's the same for any module. You can do
> something like
>
>
> package Foo;
>
> runMe();
>
> sub runMe {
> ...
> } # end runMe()
>
> 1;
>
>
> When a module gets loaded, it first gets compiled and then the code in the
> file scope gets run. This is how the module does its return of a true value:
> the result of require is the last value returned by execution of the module,
> which is traditionally handled by putting a "1;" at the end.
That would run only at compile time, and it would have to be invoked as
__PACKAGE__->runMe() in the class to get at the meta class for the role (if the
intent is to get at the attributes). Invoking runMe() in &BUILD will instead
run per instance, so I guess however it's invoked depends on the need.
chris
