require 'yaml' class Special def initialize(valuable, volatile, precious) @valuable = valuable @volatile = volatile @precious = precious end def to_yaml_properties %w{ @precious @valuable } end def to_s "#@valuable #@volatile #@precious" end end obj = Special.new("Hello", "there", "World") puts "Before: obj = #{obj}" data = YAML.dump(obj) obj = YAML.load(data) puts "After: obj = #{obj}" obj = Special.new("Hello", "there", "World") puts YAML.dump(obj)
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