I'm trying to understand how to write a custom YAML emitter. As fun and interesting as Why's documentation is, I don't quite get how to do what I need.
What I'm looking for is a way of avoiding emitting certain instance variables. Say I have a class like this:
attr_accessor :title, :chapter_titles
When I save it, I want to save the permanent features like "title" and "chapter_titles", but I want to forget the current page.
I think the YAML representation would be something like:
title: Fun with YAML
- your first yaml document
- daily yaml chores
- advanced yaml fun
From looking at "rubytypes.rb", it looks like if I redefine "to_yaml_properties" to return ["@title", "@chapter_titles"] it should work. But is this the right way? Is there another preferred way?