test map speed

gistfile1.rb

def timeit name
  begins = Time.now
  yield
  ends = Time.now
  puts "running: #{name}, spend time: #{ends - begins}"
end

class MyData
  def initialize(value)
    @value = value
  end

  def value
    @value
  end
end

def process_with_map objs
  out = objs.map{|i| i.value}
end

def process_with_amp objs
  out = objs.map(&:value)
end

datas = 1000.times.map{|i| MyData.new i }

timeit "process with map" do
  1000.times{ process_with_map(datas) }
end

timeit "process with amp" do
  1000.times{ process_with_amp(datas) }
end

result:

 $ ruby test.rb
running: process with map, spend time: 0.367840264
running: process with amp, spend time: 0.323653619

this is my result:

running: process with map, spend time: 0.226932842
running: process with amp, spend time: 0.246727534

seems mine is more natural.