Anima + Transproc vs Virtus

anima_vs_virtus.rb

require 'anima'
require 'transproc'

require 'virtus'

require 'benchmark/ips'

USERS = 1000.times.map { |i| { id: "#{i+1}", name: "User #{i+1}", age: "#{(i+1)*2}" } }

module Mappings
  extend Transproc::Registry

  import :accept_keys, from: Transproc::HashTransformations
  import :map_value, from: Transproc::HashTransformations
  import :to_integer, from: Transproc::Coercions
end

class AnimaUser
  include Anima.new(:id, :name, :age)
end

class VirtusUser
  include Virtus.value_object

  values do
    attribute :id, Integer
    attribute :name, String
    attribute :age, Integer
  end
end

build_virtus_user = -> input { VirtusUser.new(input) }

map_user_input = Mappings[:accept_keys, [:id, :name, :age]]
      .>> Mappings[:map_value, :id, Mappings[:to_integer]]
      .>> Mappings[:map_value, :age, Mappings[:to_integer]]

build_anima_user = -> input { AnimaUser.new(map_user_input[input]) }

Benchmark.ips do |x|
  x.report "anima" do
    USERS.each { |attrs| build_anima_user[attrs] }
  end

  x.report "virtus" do
    USERS.each { |attrs| build_virtus_user[attrs] }
  end

  x.compare!
end

gistfile1.txt

Calculating -------------------------------------
               anima     8.000  i/100ms
              virtus     1.000  i/100ms
-------------------------------------------------
               anima     83.732  (± 4.8%) i/s -    424.000
              virtus      6.409  (± 0.0%) i/s -     32.000

Comparison:
               anima:       83.7 i/s
              virtus:        6.4 i/s - 13.06x slower