Virtus speed comparison

results.txt

> be ruby coerce-speed.rb
Rehearsal -------------------------------------------------------
Poro                  0.020000   0.000000   0.020000 (  0.025502)
MongoidDoc            0.460000   0.000000   0.460000 (  0.464085)
VirtusModel           0.210000   0.010000   0.220000 (  0.219621)
VirtusModelNoCoerce   0.060000   0.000000   0.060000 (  0.062512)
---------------------------------------------- total: 0.760000sec

                          user     system      total        real
Poro                  0.010000   0.000000   0.010000 (  0.004206)
MongoidDoc            0.420000   0.010000   0.430000 (  0.430198)
VirtusModel           0.210000   0.000000   0.210000 (  0.242876)
VirtusModelNoCoerce   0.050000   0.000000   0.050000 (  0.056276)

virtus_speed.rb

require "benchmark"
require "mongoid" # v4.0.0
require "virtus" # v1.0.3

# Ruby 2.1.2
class Poro
  attr_accessor :foo
end

class MongoidDoc
  include Mongoid::Document
  field :foo, :type => String
end

class VirtusModel
  include Virtus.model
  attribute :foo, String
end

class VirtusModelNoCoerce
  include Virtus.model(coerce: false)
  attribute :foo, String
end

models = [Poro, MongoidDoc, VirtusModel, VirtusModelNoCoerce]
n = 10000

Benchmark.bmbm do |x|
  models.each do |model|
    x.report(model.to_s) do
      n.times do
        m = model.new
        m.foo = "foo"
      end
    end
  end
end