Addition operation on a Value object

output_graph.md

graph LR
    A["A | data: 1.0"]
    APlus(("+"))
    B["B | data: 2.0"]
    C["C | data: 3.0"]
    A --> APlus
    B --> APlus
    APlus --> C

value_example.rb

class Value
  attr_reader :data, :operation, :children
  def initialize(data:, operation: nil, children: [])
    @data = data
    @operation = operation
    @children = children
  end
  
  def +(other)
    Value.new(
      data: data + other.data,
      operation: :+,
      children: [self, other]
    )
  end
  
  def to_s
    "#<Value data: #{data}>"
  end
end

puts Value.new(data: 1.0) + Value.new(data: 2.0)
#=> #<Value data: 3.0>