Struct vs OpenStruct vs Hash benchmark

struct_bench.rb

require 'benchmark'
require 'ostruct'

Benchmark.bm 10 do |bench|
  bench.report "Hash: " do
    10_000_000.times do { name: "John Doe", age: 32 } end
  end

  bench.report "Struct: " do
    Person = Struct.new(:name, :age)
    10_000_000.times do Person.new("John Doe", 32) end
  end

  bench.report "OpenStruct: " do
    10_000_000.times do OpenStruct.new(name: "John Doe", age: 32) end
  end
end