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Why upgrade ruby version?

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self-introduction me |> name # Takayuki Matsubara |> job # Software Engineer |> work_at # M3, Inc. |> works # Rails, Java, JavaScript |> twitter # ma2ge |> github # ma2gedev |> oss # PowerAssertEx, breadcrumble, # chrono_logger, bundle-star, # faraday-encoding

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www.manning.com/books/the-little- elixir-and-otp-guidebook

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Why upgrade ruby version?

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! Gold Sponsor !

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Look around our environments 4 Ruby 2.2.0 4 Ruby 2.1.0 4 Ruby 2.0.0(EOL)

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Why upgrade ruby version? 4 EOL 4 New Features 4 Ruby is improved every year ! 4 We'd like to improve our environments " 4 Do you develop with only ruby 2.0.0 specification? 4 Do you want to change jobs to a company still using ruby 2.0?

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How to upgrade ruby version from 2.0.0 to 2.3.1 in my case? 4 make applications running on both ruby 2.0.0 and 2.3.1 4 deploy on ruby 2.0.0 4 bundle install with ruby 2.3.1 4 restart applications with ruby 2.3.1

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Our application's performance improved 50 msec faster than the old one. !

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Why upgrade ruby version? 4 EOL 4 New Features 4 We'd like to improve our environments ! 4 Performance "

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