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NEWS for Ruby 3.0.0 (25.0)

• 3.0
• 3.1
• 3.2
• 3.3

• 文書

NEWS for Ruby 3.0.0 このドキュメントは前回リリース以降のバグ修正を除くユーザーに影響のある機能の変更のリストです。

...analysis}[rdoc-label:label-Static+analysis] foundation is
introduced.
* {RBS}[rdoc-label:label-RBS] is introduced. It is a type definition
language for Ruby programs.
* {TypeProf}[rdoc-label:label-TypeProf] is experimentally bundled. It is a
type analysis tool for Ru...

...rtaken by the same definition in an
ancestor class/module, a RuntimeError is now raised (previously,
it only issued a warning in verbose mode). Additionally, accessing a
class variable from the toplevel scope is now a RuntimeError.
14541
* Assigning to a numbered parameter is now...

...instead of
a warning.

== Command line options

=== `--help` option

When the environment variable `RUBY_PAGER` or `PAGER` is present and has
a non-empty value, and the standard input and output are tty, the `--help`
option shows the help message via the pager designated by the value.
16754

===...