Re: initialization dependencies

Sean,

On Jan 29, 2009, at 10:59 AM, Sean Allen wrote:
> I'm playing around with Moose in a real world work scenario and came  
> across an interesting question...
>
> I'm working on a series of reports that mostly similar, you have to
>
> build up limits to a general query.
> pull that query
> organize the data
> pull all the data together for display and some math
>
> so you need to get things like:
>
> limits
> value X
> value Y
>
> value X and Y depend on limits to be pulled...
>
> limits is like this:
>
> has 'limits'  => ( is => 'rw', isa => 'Str', builder =>  
> 'build_limits' );
>
> could X and Y also be done with builders when they depend on limits  
> being set?
> is there a way to order the initialization of attributes? do i have  
> to order it?

Yes, any attribute can have a builder on it, but since the other two  
depend on limits, then you will likely want to make valueX and valueY  
attributes lazy. There is a Recipe in the cookbook about lazy and docs  
in Moose.pm as well.

> is moose smart enough to order them correctly ( pie in the sky  
> there )?

Nope, it is smart enough to give you control instead :)

- Stevan