This post is not specifically on how to learn everything about PureMVC with HydraMVC but mainly points out their notification workflow document that they have on their site and some other statements they make on their site.
Keep in mind that HydraMVC is a complete rewrite from PureMVC, made specifically for the Flex framework.
HydraMVC Notification Workflow
Beautiful (technically speaking) document that allows you to follow their notification system from beginning to end (tip: start from the view component and follow along).
Briefly about HydraMVC
If you are using PureMVC keep in mind the following.
PureMVC intends to be language-agnostic where HydraMVC is a compromise by design
But in the end that doesn’t mean that we can’t learn from HydraMVC if you are working on PureMVC, specially since Hydra is based (and complete rewrite) from PureMVC.
Hydra Events and Implementation
In addition to using Events vs. an independent Observer pattern, HydraMVC also streamlines implementation, encapsulating much of the initialization code that needed to be written when implementing PureMVC.
I am familiar with Flex and have written couple test applications with the framework but I haven’t used HydraMVC with Flex but I am curios on their initialization code which for the sound of their statements you have to write less code while still keeping the same functionality.