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NEWS for Ruby 3.0.0 (30.0)

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4

• 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。

...[[[1]], {}]

pr.call([1, {a: 1}])
# 2.7 => [[1], {:a=>1}] # and deprecation warning
# 3.0 => a=>1}, {}]
//}

* Arguments forwarding (`...`) now supports leading arguments.
16378

//emlist{
def method_missing(meth, ...)
send(:"do_#{meth}", ...)
end
//}

* Pattern matching (`case/in`) is...

...* Kernel#eval when called with two arguments will use `"(eval)"` for `__FILE__` and `1` for `__LINE__` in the evaluated code. 4352
* Kernel#lambda now warns if called without a literal block. 15973
* Kernel.sleep invokes the scheduler hook `#kernel_sleep(...)` in a non-blocking execution...

...y2_keywords` will no longer keep empty keyword splats, those are now removed just as they are for methods not using `ruby2_keywords`.
* When an exception is caught in the default handler, the error message and backtrace are printed in order from the innermost. 8661
* Accessing an uninitialized i...