Benchmark case over public_send

case_vs_public_send.rb

require 'benchmark'

class A
  def call_case(var = 'a')
    case var
    when 'a'
      a
    end
  end

  def call_send_public(var = 'a')
    public_send(var)
  end

  def a
  end
end



o = A.new
Benchmark.bm(10) do |x|
  x.report('case')         { 100000.times{ o.call_case }}
  x.report('public_send')  { 100000.times{ o.call_send_public }}
end

#                  user     system      total        real
# case         0.020000   0.000000   0.020000 (  0.017094)
# public_send  0.020000   0.000000   0.020000 (  0.024422)