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Nobuyoshi Nakada
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182
NEWS.md
182
NEWS.md
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@ -107,165 +107,165 @@ Outstanding ones only.
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* Class
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* Class#descendants, which returns an array of classes
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directly or indirectly inheriting from the receiver, not
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including the receiver or singleton classes.
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[[Feature #14394]]
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* Class#descendants, which returns an array of classes
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directly or indirectly inheriting from the receiver, not
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including the receiver or singleton classes.
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[[Feature #14394]]
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```ruby
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class A; end
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class B < A; end
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class C < B; end
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A.descendants #=> [B, C]
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B.descendants #=> [C]
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C.descendants #=> []
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```
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```ruby
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class A; end
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class B < A; end
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class C < B; end
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A.descendants #=> [B, C]
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B.descendants #=> [C]
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C.descendants #=> []
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```
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* Class#subclasses, which returns an array of classes
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directly inheriting from the receiver, not
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including singleton classes.
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[[Feature #18273]]
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* Class#subclasses, which returns an array of classes
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directly inheriting from the receiver, not
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including singleton classes.
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[[Feature #18273]]
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```ruby
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class A; end
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class B < A; end
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class C < B; end
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class D < A; end
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A.subclasses #=> [D, B]
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B.subclasses #=> [C]
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C.subclasses #=> []
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```
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```ruby
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class A; end
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class B < A; end
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class C < B; end
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class D < A; end
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A.subclasses #=> [D, B]
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B.subclasses #=> [C]
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C.subclasses #=> []
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```
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* Enumerable
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* Enumerable#compact is added. [[Feature #17312]]
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* Enumerable#compact is added. [[Feature #17312]]
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* Enumerable#tally now accepts an optional hash to count. [[Feature #17744]]
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* Enumerable#tally now accepts an optional hash to count. [[Feature #17744]]
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* Enumerable#each_cons and each_slice to return a receiver. [[GH-1509]]
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* Enumerable#each_cons and each_slice to return a receiver. [[GH-1509]]
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```ruby
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[1, 2, 3].each_cons(2){}
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# 3.0 => nil
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# 3.1 => [1, 2, 3]
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```ruby
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[1, 2, 3].each_cons(2){}
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# 3.0 => nil
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# 3.1 => [1, 2, 3]
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[1, 2, 3].each_slice(2){}
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# 3.0 => nil
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# 3.1 => [1, 2, 3]
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```
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[1, 2, 3].each_slice(2){}
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# 3.0 => nil
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# 3.1 => [1, 2, 3]
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```
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* Enumerator::Lazy
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* Enumerator::Lazy#compact is added. [[Feature #17312]]
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* Enumerator::Lazy#compact is added. [[Feature #17312]]
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* File
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* File.dirname now accepts an optional argument for the level to
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strip path components. [[Feature #12194]]
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* File.dirname now accepts an optional argument for the level to
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strip path components. [[Feature #12194]]
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* GC
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* "GC.measure_total_time = true" enables the measurement of GC.
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Measurement can introduce overhead. It is enabled by default.
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GC.measure_total_time returns the current setting.
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GC.stat[:time] or GC.stat(:time) returns measured time
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in milli-soconds.
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* "GC.measure_total_time = true" enables the measurement of GC.
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Measurement can introduce overhead. It is enabled by default.
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GC.measure_total_time returns the current setting.
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GC.stat[:time] or GC.stat(:time) returns measured time
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in milli-soconds.
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* GC.total_time returns measured time in nano-seconds.
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* GC.total_time returns measured time in nano-seconds.
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* Integer
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* Integer.try_convert is added. [[Feature #15211]]
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* Integer.try_convert is added. [[Feature #15211]]
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* Kernel
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* Kernel#load now accepts a module as the second argument,
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and will load the file using the given module as the top
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level module. [[Feature #6210]]
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* Kernel#load now accepts a module as the second argument,
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and will load the file using the given module as the top
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level module. [[Feature #6210]]
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* MatchData
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* MatchData#match is added [[Feature #18172]]
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* MatchData#match is added [[Feature #18172]]
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* MatchData#match_length is added [[Feature #18172]]
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* MatchData#match_length is added [[Feature #18172]]
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* Module
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* Module#prepend now modifies the ancestor chain if the receiver
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already includes the argument. Module#prepend still does not
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modify the ancestor chain if the receiver has already prepended
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the argument. [[Bug #17423]]
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* Module#prepend now modifies the ancestor chain if the receiver
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already includes the argument. Module#prepend still does not
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modify the ancestor chain if the receiver has already prepended
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the argument. [[Bug #17423]]
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* Module#private, #public, #protected, and #module_function will
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now return their arguments. If a single argument is given, it
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is returned. If no arguments are given, nil is returned. If
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multiple arguments are given, they are returned as an array.
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[[Feature #12495]]
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* Module#private, #public, #protected, and #module_function will
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now return their arguments. If a single argument is given, it
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is returned. If no arguments are given, nil is returned. If
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multiple arguments are given, they are returned as an array.
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[[Feature #12495]]
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* Process
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* Process.\_fork is added. This is a core method for fork(2).
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Do not call this method directly; it is called by existing
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fork methods: Kernel.#fork, Process.fork, and IO.popen("-").
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Application monitoring libraries can overwride this method to
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hook fork event. [[Feature #17795]]
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* Process.\_fork is added. This is a core method for fork(2).
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Do not call this method directly; it is called by existing
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fork methods: Kernel.#fork, Process.fork, and IO.popen("-").
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Application monitoring libraries can overwride this method to
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hook fork event. [[Feature #17795]]
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* Struct
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* Passing only keyword arguments to Struct#initialize is warned.
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You need to use a Hash literal to set a Hash to a first member.
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[[Feature #16806]]
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* Passing only keyword arguments to Struct#initialize is warned.
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You need to use a Hash literal to set a Hash to a first member.
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[[Feature #16806]]
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* StructClass#keyword_init? is added [[Feature #18008]]
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* StructClass#keyword_init? is added [[Feature #18008]]
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* String
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* Update Unicode version to 13.0.0 [[Feature #17750]]
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and Emoji version to 13.0 [[Feature #18029]]
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* Update Unicode version to 13.0.0 [[Feature #17750]]
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and Emoji version to 13.0 [[Feature #18029]]
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* Queue
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* Queue#initialize now accepts an Enumerable of initial values.
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[[Feature #17327]]
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* Queue#initialize now accepts an Enumerable of initial values.
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[[Feature #17327]]
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* Thread
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* Thread#native_thread_id is added. [[Feature #17853]]
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* Thread#native_thread_id is added. [[Feature #17853]]
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* Thread::Backtrace
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* Thread::Backtrace.limit, which returns the value to limit backtrace
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length set by `--backtrace-limit` command line option, is added.
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[[Feature #17479]]
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* Thread::Backtrace.limit, which returns the value to limit backtrace
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length set by `--backtrace-limit` command line option, is added.
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[[Feature #17479]]
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* $LOAD_PATH
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* $LOAD_PATH.resolve_feature_path does not raise. [[Feature #16043]]
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* $LOAD_PATH.resolve_feature_path does not raise. [[Feature #16043]]
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* Fiber Scheduler
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* Add support for `Addrinfo.getaddrinfo` using `address_resolve` hook.
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[[Feature #17370]]
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* Add support for `Addrinfo.getaddrinfo` using `address_resolve` hook.
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[[Feature #17370]]
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* Introduce non-blocking `Timeout.timeout` using `timeout_after` hook.
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[[Feature #17470]]
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* Introduce non-blocking `Timeout.timeout` using `timeout_after` hook.
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[[Feature #17470]]
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* Introduce new scheduler hooks `io_read` and `io_write` along with a
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low level `IO::Buffer` for zero-copy read/write. [[Feature #18020]]
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* Introduce new scheduler hooks `io_read` and `io_write` along with a
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low level `IO::Buffer` for zero-copy read/write. [[Feature #18020]]
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* IO hooks `io_wait`, `io_read`, `io_write`, receive the original IO object
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where possible. [[Bug #18003]]
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* IO hooks `io_wait`, `io_read`, `io_write`, receive the original IO object
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where possible. [[Bug #18003]]
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* Make `Monitor` fiber-safe. [[Bug #17827]]
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* Make `Monitor` fiber-safe. [[Bug #17827]]
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* Replace copy coroutine with pthread implementation. [[Feature #18015]]
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* Replace copy coroutine with pthread implementation. [[Feature #18015]]
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* Refinement
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* New class which represents a module created by Module#refine.
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`include` and `prepend` are deprecated, and `import_methods` is added
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instead. [[Bug #17429]]
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* New class which represents a module created by Module#refine.
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`include` and `prepend` are deprecated, and `import_methods` is added
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instead. [[Bug #17429]]
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## Stdlib updates
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