openstruct_vs_class_accessors.rb

require 'ostruct'
require 'benchmark/ips'

class User
  attr_accessor :name, :email

  def initialize(attrs)
    attrs.each { |key, val| send("#{key}=", val) }
  end
end

Benchmark.ips do |x|
  x.report('class with accessors') { User.new(name: 'John', email: '[email protected]') }
  x.report('OpenStruct') { OpenStruct.new(name: 'John', email: '[email protected]') }

  x.compare!
end