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.
Now the default values of keyword arguments can be omitted. Those “required keyword arguments” need giving explicitly at the call time.
Added suffixes for integer and float literals: 'r', 'i', and 'ri'.
“42r” and “3.14r” are evaluated as Rational(42, 1) and 3.14.rationalize, respectively. But exponential form with 'r' suffix like “6.022e+23r” is not accepted because it is misleading.
“42i” and “3.14i” are evaluated as Complex(0, 42) and Complex(0, 3.14), respectively.
“42ri” and “3.14ri” are evaluated as Complex(0, 42r) and Complex(0, 3.14r), respectively.
def-expr now returns the symbol of its name instead of nil.
Exception#cause provides the previous exception which has been caught at where raising the new exception.
introduced the generational
GC a.k.a RGenGC.
added environment variables:
obsoleted environment variables:
RUBY_FREE_MIN (Use RUBY_GC_HEAP_FREE_SLOTS instead)
RUBY_HEAP_MIN_SLOTS (Use RUBY_GC_HEAP_INIT_SLOTS instead)
Bignum performance improvement
Use GMP if available. GMP is used only for several operations: multiplication, division, radix conversion, GCD
Mutex#owned? is no longer experimental.
Numeric#step allows the limit argument to be omitted, in which case an infinite sequence of numbers is generated. Keyword arguments `to` and `by` are introduced for ease of use. `by` can be 0, in which case the same value will be generated indefinitely.
All symbols are now frozen.
Q! and q! directives for long long type if platform has the type.
main.using is no longer experimental. The method activates refinements in the ancestors of the argument module to support refinement inheritance by
open ignore internal encoding if external encoding is ASCII-8BIT.
Copies the scope information of the original environment, which means that private, protected, public, and module_function without arguments do not affect the environment outside the eval string. For example, `class Foo; eval “private”; def foo; end; end' doesn't make Foo#foo private.
Kernel#untrusted?, untrust, and trust
These methods are deprecated and their behavior is the same as tainted?, taint, and untaint, respectively. If $VERBOSE is true, they show warnings.
The ancestors of a singleton class now include singleton classes, in particular itself.
Now they return the symbols of the defined methods, not the methods/procs themselves.
Returning from lambda proc now always exits from the
Proc, not from the method where the lambda is created. Returning from non-lambda proc exits from the method, same as the former behavior.
* If invalid: :replace is specified for String#encode, replace invalid byte sequence even if the destination encoding equals to the source encoding.
All class methods modulized.
Digest::Class.file takes optional arguments for its constructor
Added Net::SMTP#rset to implement the RSET command
OpenSSL::BN.new allows Fixnum/Bignum argument.
Support multiple fields with same field name (like Set-Cookie).
Updated to 10.1.0. Major changes include removal of the class namespace, Rake::DSL to hold the rake DSL methods and removal of support for legacy rake features.
For a complete list of changes since rake 0.9.6 see:
RbConfig::SIZEOF is added to provide the size of C types.
Updated to 4.1.0. Major enhancements include a modified default template
and accessibility enhancements.
For a list of minor enhancements and bug fixes see: github.com/rdoc/rdoc/blob/v4.1.0.preview.1/History.rdoc
One-shot multicast DNS support
Support LOC resources
Fixes wrong number of arguments of entitydecl event. Document of the event says “an array of the entity declaration” but implementation passes two or more arguments. It is an implementation bug but it breaks backward compatibility.
Supports “entity” event.
REXML::Text#<< supports method chain like 'text << “XXX” << “YYY”'.
REXML::Text#<< supports not “raw” mode.
Updated to 2.2.0. Notable new features include:
Gemfile or gem.deps.rb support including Gem.file.lock (experimental)
Improved, iterative resolver (compared to RubyGems 2.1 and earlier)
Support for a sharing a GEM_HOME across ruby platforms and versions
For a complete list of enhancements and bug fixes see: github.com/rubygems/rubygems/tree/master/History.txt
StringScanner# supports named captures.
The exception to terminate the given block can no longer be rescued inside the block, by default, unless the exception class is given explicitly.
The body of a response may now be a
StringIO or other IO-like that responds to readpartial and read.
XMLRPC::Client#http. It returns
Net::HTTP for the client. Normally, it is not needed. It is useful when you want to change minor HTTP client options. You can change major HTTP client options by XMLRPC::Client methods. You should use XMLRPC::Client methods for changing major HTTP client options instead of XMLRPC::Client#http.
Set#to_set now returns self instead of generating a copy.
URI.decode_www_form follows current WHATWG URL Standard. It gets encoding argument to specify the character encoding. It now allows loose percent encoded strings, but denies ;-separator.
URI.encode_www_form follows current WHATWG URL Standard. It gets encoding argument to convert before percent encode. UTF-16 strings aren't converted to UTF-8 before percent encode by default.
Removed. curses is now available as a gem. See rubygems.org/gems/curses for details.
$SAFE=4 is obsolete. If $SAFE is set to 4 or larger, an
ArgumentError is raised.
rb_gc_set_params() is deprecated. This is only used in Ruby internal.
rb_gc_count() added. This returns the number of times
rb_gc_stat() added. This allows access to specific
GC.stat() values from C without any allocation overhead.
rb_gc_latest_gc_info() added. This allows access to
rb_postponed_job_register() added. Takes a function callback which is invoked when the VM is in a consistent state, i.e. to perform work from a C signal handler.
rb_profile_frames() added. Provides low-cost access to the current ruby stack for callstack profiling.
rb_tracepoint_new() supports new internal events accessible only from C:
Note that you *can not* specify “internal events” with normal events (such as RUBY_EVENT_CALL, RUBY_EVENT_RETURN) simultaneously.