bm__hwia_accessor_symbol_ot_string.rb

require 'benchmark/ips'

Benchmark.ips do |b|
  hash = {
                         :type => "Employee",
                   :first_name => "Mr First",
                    :last_name => "Last Name",
                :account_email => "[email protected]",
             :employing_entity => "XXX Property Services Pty Ltd",
                :employee_code => nil,
                     :location => "Head Office NSW",
          :primary_cost_centre => "XXX Property - HQ / Head Office - NSW",
      :additional_cost_centres => nil,
              :employment_type => "Full-time",
                    :job_title => "CFO",
                         :team => "Head Office NSW | CEO Direct reports | Executive Team | Finance & Technology | Head Office | Head Office NSW & ACT",
        :primary_manager_email => "[email protected]",
      :secondary_manager_email => nil,
                   :start_date => "17/12/2020",
             :termination_date => nil,
          :length_of_probation => nil,
                :company_email => "[email protected]",
               :company_mobile => nil,
             :company_landline => nil
  }

  symbolized_keys = hash.keys
  stringified_keys = hash.keys.map(&:to_s)

  require 'active_support/core_ext/hash/indifferent_access'

  b.report("convert keys symbolized") do
    symbolized_keys.each {|k| hash[k.to_sym]}
  end

  b.report("convert keys stringified") do
    stringified_keys.each {|k| hash[k.to_sym]}
  end  

  b.report("HWIA") do
    hash = hash.with_indifferent_access
    symbolized_keys.each {|k| hash[k]}
  end

  b.compare!
end

Warming up --------------------------------------
convert keys symbolized
                        83.058k i/100ms
convert keys stringified
                        46.652k i/100ms
                HWIA    10.507k i/100ms
Calculating -------------------------------------
convert keys symbolized
                        176.877k (± 0.6%) i/s -    913.638k in   5.165581s
convert keys stringified
                        148.891k (± 2.3%) i/s -    746.432k in   5.015988s
                HWIA    106.709k (± 1.9%) i/s -    535.857k in   5.023481s

Comparison:
convert keys symbolized:   176877.4 i/s
convert keys stringified:   148890.9 i/s - 1.19x  (± 0.00) slower
                HWIA:   106709.2 i/s - 1.66x  (± 0.00) slower