зеркало из https://github.com/github/ruby.git
255 строки
7.4 KiB
Markdown
255 строки
7.4 KiB
Markdown
# NEWS for Ruby 3.2.0
|
|
|
|
This document is a list of user-visible feature changes
|
|
since the **3.1.0** release, except for bug fixes.
|
|
|
|
Note that each entry is kept to a minimum, see links for details.
|
|
|
|
## Language changes
|
|
|
|
* Anonymous rest and keyword rest arguments can now be passed as
|
|
arguments, instead of just used in method parameters.
|
|
[[Feature #18351]]
|
|
|
|
```ruby
|
|
def foo(*)
|
|
bar(*)
|
|
end
|
|
def baz(**)
|
|
quux(**)
|
|
end
|
|
```
|
|
|
|
* A proc that accepts a single positional argument and keywords will
|
|
no longer autosplat. [[Bug #18633]]
|
|
|
|
```ruby
|
|
proc{|a, **k| a}.call([1, 2])
|
|
# Ruby 3.1 and before
|
|
# => 1
|
|
# Ruby 3.2 and after
|
|
# => [1, 2]
|
|
```
|
|
|
|
* Constant assignment evaluation order for constants set on explicit
|
|
objects has been made consistent with single attribute assignment
|
|
evaluation order. With this code:
|
|
|
|
```ruby
|
|
foo::BAR = baz
|
|
```
|
|
|
|
`foo` is now called before `baz`. Similarly, for multiple assignments
|
|
to constants, left-to-right evaluation order is used. With this
|
|
code:
|
|
|
|
```ruby
|
|
foo1::BAR1, foo2::BAR2 = baz1, baz2
|
|
```
|
|
|
|
The following evaluation order is now used:
|
|
|
|
1. `foo1`
|
|
2. `foo2`
|
|
3. `baz1`
|
|
4. `baz2`
|
|
|
|
[[Bug #15928]]
|
|
|
|
* Find pattern is no longer experimental.
|
|
[[Feature #18585]]
|
|
|
|
* Methods taking a rest parameter (like `*args`) and wishing to delegate keyword
|
|
arguments through `foo(*args)` must now be marked with `ruby2_keywords`
|
|
(if not already the case). In other words, all methods wishing to delegate
|
|
keyword arguments through `*args` must now be marked with `ruby2_keywords`,
|
|
with no exception. This will make it easier to transition to other ways of
|
|
delegation once a library can require Ruby 3+. Previously, the `ruby2_keywords`
|
|
flag was kept if the receiving method took `*args`, but this was a bug and an
|
|
inconsistency. A good technique to find the potentially-missing `ruby2_keywords`
|
|
is to run the test suite, for where it fails find the last method which must
|
|
receive keyword arguments, use `puts nil, caller, nil` there, and check each
|
|
method/block on the call chain which must delegate keywords is correctly marked
|
|
as `ruby2_keywords`. [[Bug #18625]] [[Bug #16466]]
|
|
|
|
```ruby
|
|
def target(**kw)
|
|
end
|
|
|
|
# Accidentally worked without ruby2_keywords in Ruby 2.7-3.1, ruby2_keywords
|
|
# needed in 3.2+. Just like (*args, **kwargs) or (...) would be needed on
|
|
# both #foo and #bar when migrating away from ruby2_keywords.
|
|
ruby2_keywords def bar(*args)
|
|
target(*args)
|
|
end
|
|
|
|
ruby2_keywords def foo(*args)
|
|
bar(*args)
|
|
end
|
|
|
|
foo(k: 1)
|
|
```
|
|
|
|
## Command line options
|
|
|
|
## Core classes updates
|
|
|
|
Note: We're only listing outstanding class updates.
|
|
|
|
* Hash
|
|
* Hash#shift now always returns nil if the hash is
|
|
empty, instead of returning the default value or
|
|
calling the default proc. [[Bug #16908]]
|
|
|
|
* Kernel
|
|
* Kernel#binding raises RuntimeError if called from a non-Ruby frame
|
|
(such as a method defined in C). [[Bug #18487]]
|
|
|
|
* MatchData
|
|
* MatchData#byteoffset has been added. [[Feature #13110]]
|
|
|
|
* Module
|
|
* Module.used_refinements has been added. [[Feature #14332]]
|
|
* Module#refinements has been added. [[Feature #12737]]
|
|
* Module#const_added has been added. [[Feature #17881]]
|
|
|
|
* Proc
|
|
* Proc#dup returns an instance of subclass. [[Bug #17545]]
|
|
* Proc#parameters now accepts lambda keyword. [[Feature #15357]]
|
|
|
|
* Refinement
|
|
* Refinement#refined_class has been added. [[Feature #12737]]
|
|
|
|
* Set
|
|
* Set is now available as a built-in class without the need for `require "set"`. [[Feature #16989]]
|
|
It is currently autoloaded via the `Set` constant or a call to `Enumerable#to_set`.
|
|
|
|
* String
|
|
* String#byteindex and String#byterindex have been added. [[Feature #13110]]
|
|
* Update Unicode to Version 14.0.0 and Emoji Version 14.0. [[Feature #18037]]
|
|
(also applies to Regexp)
|
|
* String#bytesplice has been added. [[Feature #18598]]
|
|
|
|
* Struct
|
|
* A Struct class can also be initialized with keyword arguments
|
|
without `keyword_init: true` on `Struct.new` [[Feature #16806]]
|
|
|
|
* TracePoint
|
|
* TracePoint#binding now returns `nil` for `c_call`/`c_return` TracePoints.
|
|
[[Bug #18487]]
|
|
* TracePoint#enable `target_thread` keyword argument now defaults to the
|
|
current thread if `target` and `target_line` keyword arguments are not
|
|
passed. [[Bug #16889]]
|
|
|
|
## Stdlib updates
|
|
|
|
* The following default gems are updated.
|
|
* RubyGems 3.4.0.dev
|
|
* bigdecimal 3.1.2
|
|
* bundler 2.4.0.dev
|
|
* cgi 0.3.2
|
|
* etc 1.4.0
|
|
* io-console 0.5.11
|
|
* io-wait 0.2.2.pre1
|
|
* ipaddr 1.2.4
|
|
* logger 1.5.1
|
|
* net-protocol 0.1.3
|
|
* ostruct 0.5.5
|
|
* reline 0.3.1
|
|
* securerandom 0.2.0
|
|
* stringio 3.0.2.pre1
|
|
* The following bundled gems are updated.
|
|
* net-imap 0.2.3
|
|
* rbs 2.3.2
|
|
* typeprof 0.21.2
|
|
* debug 1.5.0
|
|
* The following default gems are now bundled gems.
|
|
|
|
## Compatibility issues
|
|
|
|
Note: Excluding feature bug fixes.
|
|
|
|
### Removed constants
|
|
|
|
The following deprecated constants are removed.
|
|
|
|
* `Fixnum` and `Bignum` [[Feature #12005]]
|
|
* `Random::DEFAULT` [[Feature #17351]]
|
|
* `Struct::Group`
|
|
* `Struct::Passwd`
|
|
|
|
### Removed methods
|
|
|
|
The following deprecated methods are removed.
|
|
|
|
* `Dir.exists?` [[Feature #17391]]
|
|
* `File.exists?` [[Feature #17391]]
|
|
* `Kernel#=~` [[Feature #15231]]
|
|
* `Kernel#taint`, `Kernel#untaint`, `Kernel#tainted?`
|
|
[[Feature #16131]]
|
|
* `Kernel#trust`, `Kernel#untrust`, `Kernel#untrusted?`
|
|
[[Feature #16131]]
|
|
|
|
## Stdlib compatibility issues
|
|
|
|
* `Psych` no longer bundles libyaml sources.
|
|
Users need to install the libyaml library themselves via the package
|
|
system. [[Feature #18571]]
|
|
|
|
## C API updates
|
|
|
|
### Removed C APIs
|
|
|
|
The following deprecated APIs are removed.
|
|
|
|
* `rb_cData` variable.
|
|
* "taintedness" and "trustedness" functions. [[Feature #16131]]
|
|
|
|
## Implementation improvements
|
|
|
|
## JIT
|
|
|
|
### MJIT
|
|
|
|
### YJIT: New experimental in-process JIT compiler
|
|
|
|
## Static analysis
|
|
|
|
### RBS
|
|
|
|
### TypeProf
|
|
|
|
## Debugger
|
|
|
|
## error_highlight
|
|
|
|
## IRB Autocomplete and Document Display
|
|
|
|
## Miscellaneous changes
|
|
|
|
[Feature #12005]: https://bugs.ruby-lang.org/issues/12005
|
|
[Feature #12737]: https://bugs.ruby-lang.org/issues/12737
|
|
[Feature #13110]: https://bugs.ruby-lang.org/issues/13110
|
|
[Feature #14332]: https://bugs.ruby-lang.org/issues/14332
|
|
[Feature #15231]: https://bugs.ruby-lang.org/issues/15231
|
|
[Feature #15357]: https://bugs.ruby-lang.org/issues/15357
|
|
[Bug #15928]: https://bugs.ruby-lang.org/issues/15928
|
|
[Feature #16131]: https://bugs.ruby-lang.org/issues/16131
|
|
[Bug #16466]: https://bugs.ruby-lang.org/issues/16466
|
|
[Feature #16806]: https://bugs.ruby-lang.org/issues/16806
|
|
[Bug #16889]: https://bugs.ruby-lang.org/issues/16889
|
|
[Bug #16908]: https://bugs.ruby-lang.org/issues/16908
|
|
[Feature #16989]: https://bugs.ruby-lang.org/issues/16989
|
|
[Feature #17351]: https://bugs.ruby-lang.org/issues/17351
|
|
[Feature #17391]: https://bugs.ruby-lang.org/issues/17391
|
|
[Bug #17545]: https://bugs.ruby-lang.org/issues/17545
|
|
[Feature #17881]: https://bugs.ruby-lang.org/issues/17881
|
|
[Feature #18037]: https://bugs.ruby-lang.org/issues/18037
|
|
[Feature #18351]: https://bugs.ruby-lang.org/issues/18351
|
|
[Bug #18487]: https://bugs.ruby-lang.org/issues/18487
|
|
[Feature #18571]: https://bugs.ruby-lang.org/issues/18571
|
|
[Feature #18585]: https://bugs.ruby-lang.org/issues/18585
|
|
[Feature #18598]: https://bugs.ruby-lang.org/issues/18598
|
|
[Bug #18625]: https://bugs.ruby-lang.org/issues/18625
|
|
[Bug #18633]: https://bugs.ruby-lang.org/issues/18633
|