jaredmoody/ruby_contains_any_bench.rb

## ruby_contains_any_bench.rb
require 'benchmark/ips'
require 'set'

puts "ruby version: #{RUBY_VERSION}"

CHEESES = %w(chedder stilton brie mozzarella feta haloumi).freeze
FOODS = %w(pizza feta foods bread biscuits yoghurt bacon).freeze

Benchmark.ips do |b|
  b.report("&, empty?") { (FOODS & CHEESES).empty? }
  b.report("any?, include?") { FOODS.any? {|food| CHEESES.include?(food) } }
  b.report("Set disjoint") { Set.new(CHEESES).disjoint? Set.new(FOODS) }
  b.compare!
end

# My results:
#
# ruby version: 2.2.6
# Warming up --------------------------------------
#            &, empty?    42.348k i/100ms
#       any?, include?   112.146k i/100ms
#         Set disjoint     7.278k i/100ms
# Calculating -------------------------------------
#            &, empty?    507.050k (± 6.2%) i/s -      2.541M in   5.032420s
#       any?, include?      2.125M (± 5.5%) i/s -     10.654M in   5.030139s
#         Set disjoint     81.391k (± 3.7%) i/s -    407.568k in   5.014699s
#
# Comparison:
#       any?, include?:  2125373.3 i/s
#            &, empty?:   507049.7 i/s - 4.19x  slower
#         Set disjoint:    81390.6 i/s - 26.11x  slower

# *************************************************************
# ruby version: 2.3.4
# Warming up --------------------------------------
#            &, empty?    43.809k i/100ms
#       any?, include?   135.902k i/100ms
#         Set disjoint     8.354k i/100ms
# Calculating -------------------------------------
#            &, empty?    553.701k (± 4.2%) i/s -      2.804M in   5.073096s
#       any?, include?      2.415M (± 7.0%) i/s -     12.095M in   5.043469s
#         Set disjoint     79.318k (±10.2%) i/s -    392.638k in   5.013309s
#
# Comparison:
#       any?, include?:  2414705.1 i/s
#            &, empty?:   553700.7 i/s - 4.36x  slower
#         Set disjoint:    79318.2 i/s - 30.44x  slower
	require 'benchmark/ips'
	require 'set'

	puts "ruby version: #{RUBY_VERSION}"

	CHEESES = %w(chedder stilton brie mozzarella feta haloumi).freeze
	FOODS = %w(pizza feta foods bread biscuits yoghurt bacon).freeze

	Benchmark.ips do \|b\|
	b.report("&, empty?") { (FOODS & CHEESES).empty? }
	b.report("any?, include?") { FOODS.any? {\|food\| CHEESES.include?(food) } }
	b.report("Set disjoint") { Set.new(CHEESES).disjoint? Set.new(FOODS) }
	b.compare!
	end

	# My results:
	#
	# ruby version: 2.2.6
	# Warming up --------------------------------------
	# &, empty? 42.348k i/100ms
	# any?, include? 112.146k i/100ms
	# Set disjoint 7.278k i/100ms
	# Calculating -------------------------------------
	# &, empty? 507.050k (± 6.2%) i/s - 2.541M in 5.032420s
	# any?, include? 2.125M (± 5.5%) i/s - 10.654M in 5.030139s
	# Set disjoint 81.391k (± 3.7%) i/s - 407.568k in 5.014699s
	#
	# Comparison:
	# any?, include?: 2125373.3 i/s
	# &, empty?: 507049.7 i/s - 4.19x slower
	# Set disjoint: 81390.6 i/s - 26.11x slower

	# *************************************************************
	# ruby version: 2.3.4
	# Warming up --------------------------------------
	# &, empty? 43.809k i/100ms
	# any?, include? 135.902k i/100ms
	# Set disjoint 8.354k i/100ms
	# Calculating -------------------------------------
	# &, empty? 553.701k (± 4.2%) i/s - 2.804M in 5.073096s
	# any?, include? 2.415M (± 7.0%) i/s - 12.095M in 5.043469s
	# Set disjoint 79.318k (±10.2%) i/s - 392.638k in 5.013309s
	#
	# Comparison:
	# any?, include?: 2414705.1 i/s
	# &, empty?: 553700.7 i/s - 4.36x slower
	# Set disjoint: 79318.2 i/s - 30.44x slower