Ruby
Ruby 3.0 adds `Hash#except` and `ENV.except`
Ruby 3.0 adds `Hash#except` to return a new hash that includes everything from the original hash except the given keys. `ENV` also gets support for `except`.Ruby adds support for forwarding arguments to a method, along with the leading arguments
... operator was limited to forwarding arguments. With Ruby 3.0, it can forward the arguments along with the leading arguments.Ruby adds `Symbol#name` to return frozen string corresponding to the symbol name
Ruby has added `Symbol#name`, which returns the name of the symbol if it is named. The returned string can not be modified.Ruby adds experimental support for Rightward assignments
Previously ruby used to support only Rvalue to be assigned to Lvalue. Now, it adds support for Rightward assignmentRuby introduces find pattern in pattern matching
Find pattern is introduced in pattern matching, which is useful in matching arrays.Ruby 3.0 - Procs accepting a single rest argument and keyword arguments are no longer subject to autosplatting
Ruby 3.0 changed the inconsistent behavior for autosplatting, when rest argument and keyword arguments are present for a ProcRuby adds experimental support for end-less method definition
Ruby has added a new experimental syntax for defining single-line methods without using the end keyword.Heredocs and how to use them in Ruby and Rails
What are heredoc and different ways to use them in Ruby and Rails.Rails adds round_mode parameter support to number helpers
Rails has added :round_mode parameter support to number helpers
Ruby 2.7 - Setting $ special variables to non-nil value is now warned
In Ruby 2.7, setting special variable $, $; $/ $\ to non-nil values will now show a deprecated warning