min.rb

# frozen_string_literal: true

require 'benchmark/ips'

def fast
  [1, 2].min.then { |m| [m, 3].min }
end

def slow
  [1, 2, 3].min
end

Benchmark.ips do |x|
  x.report('min with optimize') { fast }
  x.report('just min') { slow }
  x.compare!
end
# Warming up --------------------------------------
# min with optimize
#                        260.309k i/100ms
# just min
#                        315.843k i/100ms
# Calculating -------------------------------------
# min with optimize
#                           6.130M (± 3.4%) i/s -     30.716M in   5.016724s
# just min
#                           9.670M (± 3.0%) i/s -     48.324M in   5.002336s
#
# Comparison:
# min with optimize:  9669767.0 i/s
# just min:  6130468.3 i/s - 1.58x  slower