string_benchmark.rbstring_benchmark.rb

require 'benchmark'

def do_it(n = 1_000_000)
  Benchmark.bm(15) do |bm|
    foo = :foo
    bm.report("Symbol == Symbol") { n.times { :foo == foo } }
    bm.report("to_sym") { n.times { "foo".intern } }
    bm.report("hash") { n.times { "foo".hash } }
    bar = "bar"
    baz = "baz".freeze
    bm.report("String == other String") { n.times { "bar" == bar } }
    bm.report("same string") { n.times { bar == bar } }
    bm.report("String == frozen String") { n.times { "baz" == baz } }
  end
end

do_it