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NEWS

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# -*- rdoc -*-

NEWS for Ruby 2.3.0

This document is a list of user visible feature changes made between releases except for bug fixes.

Note that each entry is kept so brief that no reason behind or reference information is supplied with. For a full list of changes with all sufficient information, see the ChangeLog file.

Changes since the 2.2.0 release

Language changes

Core classes updates (outstanding ones only)

  • Enumerable

    • Enumerable#grep_v is added as inverse version of Enumerable#grep.

  • Numeric

    • Numeric#positive? and Numeric#negative? are added, which return true when the receiver is positive and negative respectively.

Core classes compatibility issues (excluding feature bug fixes)

  • Array

    • Array#select!, Array#keep_if, Array#reject!, and Array#delete_if no longer changes the receiver array instantly every time the block is called. [Feature #10714]

    • Array#flatten and Array#flatten! no longer try to call #to_ary method on elements beyond the given level. [Bug #10748]

  • Enumerable

    • Enumerable#chunk and Enumerable#slice_before no longer takes the initial_state argument. [Feature #10958] Use a local variable instead to maintain a state.

  • IO

    • IO#close doesn’t raise when the IO object is closed. [Feature #10718]

Stdlib updates (outstanding ones only)

  • Socket

    • Socket#accept_nonblock and Socket#connect_nonblock supports ‘exception :false` to return symbols. Ditto for TCPServer#accept_nonblock, UNIXServer#accept_nonblock.

  • ObjectSpace (objspace)

    • ObjectSpace.count_imemo_objects is added.

  • OpenSSL

    • OpenSSL::SSL::SSLSocket#accept_nonblock and OpenSSL::SSL::SSLSocket#connect_nonblock supports ‘exception: false`.

  • io/wait

    • IO#wait_readable no longer checks FIONREAD, it may be used for non-bytestream IO such as listen sockets.

Stdlib compatibility issues (excluding feature bug fixes)

  • lib/webrick/utils.rb

  • removed unused argument. github.com/ruby/ruby/pull/356

  • lib/drb/drb.rb

  • removed unused argument. github.com/ruby/ruby/pull/515

  • lib/base64.rb

  • Base64.urlsafe_encode64: added a “padding” option to suppress the padding character (“=”).

  • Base64.urlsafe_decode64: now it accepts not only correctly-padded input but also unpadded input.

  • lib/matrix.rb

  • Add Vector#round. github.com/ruby/ruby/pull/802

  • ext/coverage/coverage.c

    • Coverage.peek_result: new method to allow coverage to be captured without stopping the coverage tool.

  • Net::Telnet

    • Net::Telnet is extracted to net-telnet gem. It’s unmaintain code.

  • Rake

    • Rake is removed from stdlib.

Built-in global variables compatibility issues

C API updates

Build system updates

Implementation changes