require "benchmark/ips"

puts RUBY_DESCRIPTION

class Inherit < Struct.new(:id, :name, :age)
  def name_and_age
    "#{name}, #{age}"
  end
end

Block = Struct.new(:id, :name, :age) do
  def name_and_age
    "#{name}, #{age}"
  end
end

Reopen = Struct.new(:id, :name, :age)
class Reopen
  def name_and_age
    "#{name}, #{age}"
  end
end

Benchmark.ips do |x|
  x.report("Inherit"){ |times|
    i = 0
    while i < times
      Inherit.new(1, 2, 3).name_and_age
      i += 1
    end
  }

  x.report("Block"){ |times|
    i = 0
    while i < times
      Block.new(1, 2, 3).name_and_age
      i += 1
    end
  }

  x.report("Reopen"){ |times|
    i = 0
    while i < times
      Reopen.new(1, 2, 3).name_and_age
      i += 1
    end
  }

  x.compare!
end