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NEWS for Ruby 3
. 0 . 0 (120.0) -
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。
...d in singleton class definitions in methods is now a SyntaxError
instead of a warning. yield in a class definition outside of a method
is now a SyntaxError instead of a LocalJumpError. 15575
* When a class variable is overtaken by the same definition in an
ancestor class/module, a Run......valuated 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 context. 16786
* Module
* Module#include and Module#prepend now affect classes and modules that have already......pdate to Etc 1.2.0
* This version is Ractor compatible.
* Fiddle
* Update to Fiddle 1.0.5
* IRB
* Update to IRB 1.2.6
* JSON
* Update to JSON 2.5.0
* This version is Ractor compatible.
* Set
* Update to set 1.0.0
* SortedSet has been removed for dependency and per... -
NEWS for Ruby 2
. 7 . 0 (90.0) -
NEWS for Ruby 2.7.0 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。
...ingPatternError
//}
//emlist{
json = <<END
{
"name": "Alice",
"age": 30,
"children": [{ "name": "Bob", "age": 2 }]
}
END
JSON.parse(json, symbolize_names: true) in {name: "Alice", children: [{name: name, age: age}]}
p name #=> "Bob"
p age #=> 2
JSON.parse(json, symbolize_names: true) in {......rning: `_1' is reserved for numbered parameter; consider another name
[1].each { p _1 } # prints 0 instead of 1
==== ブロックなしの proc/lambda が deprecated
* ブロック付きで呼び出されたメソッドの中で、ブロックなしでProc.newやKernel#procを
呼び出す......ted です。 15575
この警告は「-W:no-deprecated」オプションで止められます。
//emlist{
def foo
class << Object.new
yield #=> warning: `yield' in class syntax will not be supported from Ruby 3.0. 15575
end
end
foo { p :ok }
//}
* 引数を転送する記法「(...)...