puts "Ruby #{RUBY_VERSION}-p#{RUBY_PATCHLEVEL}:\n"

require 'benchmark/ips'

def without_block(x,y,z); end
def with_block(x,y,z,&b); end

puts
puts '* no passing a block'
puts

Benchmark.ips do |x|
  x.report 'method with block' do
    with_block(1,2,3)
  end

  x.report 'method without block' do
    without_block(1,2,3)
  end

  x.compare!
end

puts
puts '* passing a block'
puts

Benchmark.ips do |x|
  x.report 'method with block' do
    with_block(1,2,3) {  }
  end

  x.report 'method without block' do
    without_block(1,2,3) {  }
  end

  x.compare!
end

# Ruby 2.3.0-p0:
#
# * no passing a block
#
# Calculating -------------------------------------
#    method with block   100.240k i/100ms
# method without block   103.667k i/100ms
# -------------------------------------------------
#    method with block      5.498M (± 0.4%) i/s -     27.566M
# method without block      6.616M (± 0.8%) i/s -     33.070M
#
# Comparison:
# method without block:  6615605.0 i/s
#    method with block:  5497671.8 i/s - 1.20x slower
#
#
# * passing a block
#
# Calculating -------------------------------------
#    method with block    73.786k i/100ms
# method without block   104.354k i/100ms
# -------------------------------------------------
#    method with block      1.779M (± 6.0%) i/s -      8.854M
# method without block      6.419M (± 2.6%) i/s -     32.141M
#
# Comparison:
# method without block:  6418544.7 i/s
#    method with block:  1779275.9 i/s - 3.61x slower
#
#
#
# Ruby 2.2.4-p230:
#
# * no passing a block
#
# Calculating -------------------------------------
#    method with block    96.338k i/100ms
# method without block    98.046k i/100ms
# -------------------------------------------------
#    method with block      4.099M (± 2.3%) i/s -     20.520M
# method without block      5.280M (± 0.5%) i/s -     26.472M
#
# Comparison:
# method without block:  5279791.5 i/s
#    method with block:  4098867.6 i/s - 1.29x slower
#
#
# * passing a block
#
# Calculating -------------------------------------
#    method with block    71.199k i/100ms
# method without block   101.587k i/100ms
# -------------------------------------------------
#    method with block      1.712M (± 2.7%) i/s -      8.615M
# method without block      5.691M (± 0.4%) i/s -     28.546M
#
# Comparison:
# method without block:  5691093.6 i/s
#    method with block:  1711522.5 i/s - 3.33x slower
#
#
#
# Ruby 2.1.8-p440:
#
# * no passing a block
#
# Calculating -------------------------------------
#    method with block   101.878k i/100ms
# method without block   103.593k i/100ms
# -------------------------------------------------
#    method with block      5.184M (± 1.5%) i/s -     25.979M
# method without block      5.757M (± 0.8%) i/s -     28.799M
#
# Comparison:
# method without block:  5757382.9 i/s
#    method with block:  5183517.3 i/s - 1.11x slower
#
#
# * passing a block
#
# Calculating -------------------------------------
#    method with block    63.973k i/100ms
# method without block   107.936k i/100ms
# -------------------------------------------------
#    method with block      1.253M (± 3.5%) i/s -      6.269M
# method without block      5.512M (± 0.7%) i/s -     27.632M
#
# Comparison:
# method without block:  5511681.9 i/s
#    method with block:  1253081.9 i/s - 4.40x slower
#
#
#