What's new in Ruby 4.0
18-Dec-2025 1057
Ruby 4.0 will be released next week on Christmas day. This release brings a new JIT compiler, improvements to Ractors, a new mechanism to define namespaces called Ruby::Box, and a whole lot of other changes.
Although it’s a major version bump, there shouldn’t be any serious breaking changes. This version bump is to celebrate 30 years since the first public release of Ruby.
What's new in Ruby 4.0 #ruby #rubydeveloper #rubyonrails #What's https://rubyonrails.ba/link/what-s-new-in-ruby-4-0
