Compare giving a block versus giving proc created using Method#to_proc

bench_method_to_proc.rb

require 'rubygems'
gem 'minitest', '>= 2.2'
require 'minitest/autorun'
require 'minitest/benchmark'

class BenchMethodToProc < MiniTest::Unit::TestCase

  def self.test_order
    :alpha
  end

  def self.bench_range
    bench_exp 10_000, 1_000_000
  end

  DATA = [1, 2, 3, 'one', 'two', 'three', :one, :two, :three]

  def bench_block
    assert_performance_linear do |n|
      n.times do DATA.map { |x| x.class } end
    end
  end

  def my_block x
    x.class
  end

  def bench_method_to_proc
    assert_performance_linear do |n|
      n.times do DATA.map &method(:my_block) end
    end
  end

end

results.txt

# Running benchmarks:

BenchMethodToProc	10000	100000	1000000
bench_block	 0.039517	 0.307440	 3.282183
bench_method_to_proc	 0.150314	 1.416282	14.335822


Finished benchmarks in 19.725056s, 0.1014 tests/s, 0.1014 assertions/s.

2 tests, 2 assertions, 0 failures, 0 errors, 0 skips