Benchmark comparison scripts wrt the bob exercise

compare_strip_empty_vs_regex_implementation_for_silent.rb

SILENT = /\A\s*\z/

SILENT2 = ->(remark) { remark.strip.empty? }

  def hey_fast(remark)
    case remark
     when SILENT
      'Fine. Be that way!'
    else
      "Whatever."
    end
  end


  def hey_slow(remark)
    case remark
     when SILENT2
      'Fine. Be that way!'
    else
      "Whatever."
    end
  end


Benchmark.ips do |x|
  x.report("fast code description") { hey_fast("    ") }
  x.report("slow code description") { hey_slow("    ") }
  x.compare!
end

regex_vs_endwith_comparisonb.rb

SILENT = ->(remark) { remark.end_with?('?') }

SILENT2 = /\?\z/

def hey_fast(remark)
  case remark
   when SILENT
    'Sure.'
  else
    "Whatever."
  end
end

def hey_slow(remark)
  case remark
   when SILENT2
    'Sure.'
  else
    "Whatever."
  end
end

Benchmark.ips do |x|
  x.report("fast code description") { hey_fast("You are, what, like 15?") }
  x.report("slow code description") { hey_slow("You are, what, like 15?") }
  x.compare!
end

results_comparing_end_with_n_regex_to_check_for_end_with_?.rb

Warming up --------------------------------------
fast code description
                        79.607k i/100ms
slow code description
                        37.594k i/100ms
Calculating -------------------------------------
fast code description
                          2.539M (± 8.7%) i/s -     12.658M
slow code description
                        718.586k (± 7.6%) i/s -      3.571M

Comparison:
fast code description:  2538652.8 i/s
slow code description:   718585.6 i/s - 3.53x slower

 => #<Benchmark::IPS::Report:0x007fa741959328 @entries=[#<Benchmark::IPS::Report::Entry:0x007fa741b433c8 @label="fast code description", @microseconds=5027441.024780273, @iterations=12657513, @ips=2538652.765822625, @ips_sd=220997, @measurement_cycle=79607, @show_total_time=false>, #<Benchmark::IPS::Report::Entry:0x007fa741b0b928 @label="slow code description", @microseconds=5000115.633010864, @iterations=3571430, @ips=718585.6422104437, @ips_sd=54368, @measurement_cycle=37594, @show_total_time=false>], @data=nil>