ruby/NEWS.md

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NEWS for Ruby 3.3.0

This document is a list of user-visible feature changes since the 3.2.0 release, except for bug fixes.

Note that each entry is kept to a minimum, see links for details.

Language changes

Core classes updates

Note: We're only listing outstanding class updates.

  • Array

    • Array#pack now raises ArgumentError for unknown directives. [Bug #19150]
  • String

    • String#unpack now raises ArgumentError for unknown directives. [Bug #19150]
    • String#bytesplice now accepts new arguments index/length or range of the source string to be copied. [Feature #19314]
  • ObjectSpace::WeakKeyMap

    • New core class to build collections with weak references. The class use equality semantic to lookup keys like a regular hash, but it doesn't hold strong references on the keys. Feature #18498

Stdlib updates

The following default gems are updated.

  • RubyGems 3.5.0.dev
  • bigdecimal 3.1.4
  • bundler 2.5.0.dev
  • csv 3.2.7
  • fiddle 1.1.2
  • irb 1.6.3
  • optparse 0.4.0.pre.1
  • psych 5.1.0
  • stringio 3.0.6
  • strscan 3.0.7
  • timeout 0.3.2

The following bundled gems are updated.

  • minitest 5.18.0
  • rbs 3.0.2
  • typeprof 0.21.7

See GitHub releases like Logger or changelog for details of the default gems or bundled gems.

Supported platforms

Compatibility issues

Stdlib compatibility issues

C API updates

Implementation improvements

JIT