Ruby

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 assignment

Ruby 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 Proc

Ruby 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

Ruby 2.7 removes taint checking mechanism

Ruby 2.7 access and setting of $SAFE is now always warned. $SAFE will become a normal global variable in Ruby 3.0