Ruby Next: make old Ruby quack like a new one

At RubyConf, in Nashville, US

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This talk introduces the transpiler for Ruby, Ruby Next.

Ruby 2.7 is just around the corner. It will bring a lot of new features, including new syntax additions: pattern matching, and numbered parameters.

That’s good news. The bad news is that not many of us will be able to use these goodies right away: the upgrade cost blocks application developers; gem authors have to support older versions.

What if we could use Ruby Next features while running Ruby Current? Maybe, we can cast a metaprogramming spell for that? Yes, we can. And I’ll show you how.

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