What is Ruby doing on Rails?
Hello, you're reading Infinum Ruby Drops, bringing you the latest Ruby and Rails related news straight to your inbox every week.
Speeding up Ruby MRI with Rust
You could try very very hard to squeeze as much performance from your code as you can at the cost of abstractions. But at the end of the day, no matter how hard you try, you will wake up in the morning and Ruby will still be the same interpreted language.
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 Rails 6 adds if_not_exists option to create_table.

A fixture-based approach to making tests understandable, and small tools we use to reach this goal.
FFI stands for "Foreign Function Interface". It's a Ruby module that allows you to use external libraries as if they were part of the language itself.
Ruby 2.7 adds Enumerable#filter_map which is a short hand for filter + map in a single call.
Beyond Ruby
I’ve listed below some common unhelpful behaviors people display during code reviews, and some recommendations on how software teams can make their teams more supportive by refusing to normalize toxicity.
Behaviours and skills exhibited by the very best pair programmers.

Blast from the past
Ruby on Rails has some benefits which are focused on improving the development process, but in some cases make maintenance of production system more difficult. In terms of the way payments work, some of its shortcomings mean trouble.
Gem of the week
A Ruby library for carefully refactoring critical paths.