Pry でサクッとベンチマーク

.pryrc に以下を追記すると、pry実行時にサクッとベンチマークがとれます。

# ■ 使い方
# pry(main)> bench | {  [測定対象]  }
# pry(main)> bench | do
#  [測定対象]
# end
command_set = Pry::CommandSet.new do
  block_command('bench', "Use the Ruby benchmark to measure code blocks.", takes_block: true) do
    require 'benchmark'

    Benchmark.bm do |x|
      x.report do
        command_block.call
      end
    end
  end
end
Pry::Commands.import(command_set)