Question

How to DRY the following code and call the first initializer from the second?

class DataStream

  attr_reader :asset
  attr_reader :data

  def initialize(asset)
    @asset = asset
    @data = Array.new
  end

  def initialize(asset, values)
    @asset = asset
    @data = Array.new
    values.each do |value|
      add_value(value)
    end
  end

end

Answer 1

Use default arguments:

def initialize(asset, values = [])
  @asset = asset
  @data = Array.new
  values.each do |value|
    add_value(value)
  end
end