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405 lines
14 KiB
Text
405 lines
14 KiB
Text
# -*- rdoc -*-
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= NEWS for Ruby 2.0.0
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This document is a list of user visible feature changes made between
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releases except for bug fixes.
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Note that each entry is kept so brief that no reason behind or
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reference information is supplied with. For a full list of changes
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with all sufficient information, see the ChangeLog file.
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== Changes since the 1.9.3 release
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=== C API updates
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* NUM2SHORT() and NUM2USHORT() added. They are similar to NUM2INT, but short.
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* rb_newobj_of() and NEWOBJ_OF() added. They create a new object of a given class.
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=== Library updates (outstanding ones only)
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* builtin classes
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* Array
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* added method:
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* added Array#bsearch for binary search.
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* incompatible changes:
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* random parameter of Array#shuffle! and Array#sample now
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will be called with one argument, maximum value.
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* when given Range arguments, Array#values_at now returns nil for each
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value that is out-of-range.
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* Enumerable
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* added method:
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* added Enumerable#lazy method for lazy enumeration.
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* Enumerator
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* added method:
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* added Enumerator#size for lazy size evaluation.
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* extended method:
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* Enumerator.new accept an argument for lazy size evaluation.
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* ENV
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* aliased method:
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* ENV.to_h is a new alias for ENV.to_hash
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* Fiber
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* incompatible changes:
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* Fiber#resume cannot resume a fiber which invokes "Fiber#transfer".
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* File
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* extended method:
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* File.fnmatch? now expands braces in the pattern if
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File::FNM_EXTGLOB option is given.
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* GC
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* improvements:
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* introduced the bitmap marking which suppresses to copy a memory page
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with Copy-on-Write.
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* introduced the non-recursive marking which avoids unexpected stack overflow.
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* GC::Profiler
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* added method:
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* added GC::Profiler.raw_data which returns raw profile data for GC.
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* Hash
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* added method:
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* added Hash#to_h as explicit conversion method, like Array#to_a.
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* extended method:
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* Hash#default_proc= can be passed nil to clear the default proc.
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* Kernel
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* added method:
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* added Kernel#Hash conversion method like Array() or Float().
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* added Kernel#using, which imports refinements into the current scope.
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[experimental]
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* added Kernel#__dir__ which returns a current dirname.
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* added Kernel#caller_locations which returns an array of
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frame information objects.
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* extended method:
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* Kernel#warn accepts multiple args in like puts.
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* Kernel#caller accepts second optional argument `n' which specify
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required caller size.
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* Kernel#to_enum and enum_for accept a block for lazy size evaluation.
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* incompatible changes:
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* system() and exec() closes non-standard file descriptors
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(The default of :close_others option is changed to true by default.)
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* respond_to? against a protected method now returns false unless
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the second argument is true.
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* __callee__ has returned to the original behavior, and now
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returns the called name but not the original name in an
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aliased method.
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* Kernel#inspect does not call #to_s anymore
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(it used to call redefined #to_s).
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* LoadError
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* added method:
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* added LoadError#path method to return the file name that could not be
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loaded.
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* Module
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* added method:
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* added Module#prepend which is similar to Module#include,
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however a method in the prepended module overrides the
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corresponding method in the prepending module.
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* added Module#refine, which extends a class or module locally.
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[experimental]
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* added Module#refinements, which returns refinements defined in the
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receiver. [experimental]
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* added Module#using, which imports refinements into the receiver.
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[experimental]
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* extended method:
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* Module#define_method accepts a UnboundMethod from a Module.
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* Module#const_get accepts a qualified constant string, e.g.
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Object.const_get("Foo::Bar::Baz")
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* Mutex
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* added method:
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* added Mutex#owned? which returns the mutex is held by current
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thread or not. [experimental]
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* incompatible changes:
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* Mutex#lock, Mutex#unlock, Mutex#try_lock, Mutex#synchronize
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and Mutex#sleep are no longer allowed to be used from trap handler
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and raise a ThreadError in such case.
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* Mutex#sleep may spurious wakeup. Check after wakeup.
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* NilClass
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* added method:
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* added nil.to_h which returns {}
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* Process
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* added method:
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* added getsid for getting session id (unix only).
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* Range
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* added method:
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* added Range#size for lazy size evaluation.
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* added Range#bsearch for binary search.
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* Signal
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* added method:
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* added Signal.signame which returns signal name
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* incompatible changes:
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* Signal.trap raises ArgumentError when :SEGV, :BUS, :ILL, :FPE, :VTALRM
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are specified.
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* String
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* added method:
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* added String#b returning a copied string whose encoding is ASCII-8BIT.
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* change return value:
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* String#lines now returns an array instead of an enumerator.
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* String#chars now returns an array instead of an enumerator.
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* String#codepoints now returns an array instead of an enumerator.
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* String#bytes now returns an array instead of an enumerator.
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* Struct
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* added method:
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* added Struct#to_h returning values with keys corresponding to the
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instance variable names.
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* Thread
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* added method:
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* added Thread#thread_variable_get for getting thread local variables
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(these are different than Fiber local variables).
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* added Thread#thread_variable_set for setting thread local variables.
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* added Thread#thread_variables for getting a list of the thread local
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variable keys.
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* added Thread#thread_variable? for testing to see if a particular thread
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variable has been set.
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* added Thread#backtrace_locations which returns similar information of
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Kernel#caller_locations.
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* incompatible changes:
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* Thread#join and Thread#value now raises a ThreadError if target thread
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is the current or main thread.
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* Time
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* change return value:
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* Time#to_s returned encoding defaults to US-ASCII but automatically
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transcodes to Encoding.default_internal if it is set.
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* TracePoint
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* new class. This class is replacement of set_trace_func.
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Easy to use and efficient implementation.
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* toplevel
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* added method:
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* added main.define_method which defines a global function.
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* cgi
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* Add HTML5 tag maker.
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* CGI#header has been renamed to CGI#http_header and
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aliased to CGI#header.
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* When HTML5 tagmaker called, overwrite CGI#header,
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CGI#header function is to create a <header> element.
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* iconv
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* Iconv has been removed. Use String#encode instead.
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* io/wait
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* new features:
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* added IO#wait_writable method.
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* added IO#wait_readable method as alias of IO#wait.
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* net/http
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* new features:
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* Proxies are now automatically detected from the http_proxy environment
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variable. See Net::HTTP::new for details.
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* gzip and deflate compression are now requested for all requests by
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default. See Net::HTTP for details.
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* SSL sessions are now reused across connections for a single instance.
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This speeds up connection by using a previously negotiated session.
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* new methods:
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* Net::HTTP#local_host
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* Net::HTTP#local_host=
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* Net::HTTP#local_port
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* Net::HTTP#local_port=
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* extended method:
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* Net::HTTP#connect uses local_host and local_port if specified.
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* net/imap
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* new methods:
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* Net::IMAP.default_port
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* Net::IMAP.default_imap_port
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* Net::IMAP.default_tls_port
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* Net::IMAP.default_ssl_port
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* Net::IMAP.default_imaps_port
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* objspace
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* new method:
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* ObjectSpace.reachable_objects_from(obj)
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* openssl
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* Consistently raise an error when trying to encode nil values. All instances
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of OpenSSL::ASN1::Primitive now raise TypeError when calling to_der on an
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instance whose value is nil. All instances of OpenSSL::ASN1::Constructive
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raise NoMethodError in the same case. Constructing such values is still
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permitted.
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* TLS 1.1 & 1.2 support by setting OpenSSL::SSL::SSLContext#ssl_version to
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:TLSv1_2, :TLSv1_2_server, :TLSv1_2_client or :TLSv1_1, :TLSv1_1_server
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:TLSv1_1_client. The version being effectively used can be queried
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with OpenSSL::SSL#ssl_version. Furthermore, it is also possible to
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blacklist the new TLS versions with OpenSSL::SSL:OP_NO_TLSv1_1 and
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OpenSSL::SSL::OP_NO_TLSv1_2.
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* Added OpenSSL::SSL::SSLContext#renegotiation_cb. A user-defined callback
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may be set which gets called whenever a new handshake is negotiated. This
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also allows to programmatically decline (client) renegotiation attempts.
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* Support for "0/n" splitting of records as BEAST mitigation via
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OpenSSL::SSL::OP_DONT_INSERT_EMPTY_FRAGMENTS.
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* OpenSSL requires passwords for decrypting PEM-encoded files to be at least
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four characters long. This led to awkward situations where an export with
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a password with fewer than four characters was possible, but accessing the
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file afterwards failed. OpenSSL::PKey::RSA, OpenSSL::PKey::DSA and
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OpenSSL::PKey::EC therefore now enforce the same check when exporting a
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private key to PEM with a password - it has to be at least four characters
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long.
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* SSL/TLS support for the Next Protocol Negotiation extension. Supported
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with OpenSSL 1.0.1 and higher.
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* OpenSSL::OPENSSL_FIPS allows client applications to detect whether OpenSSL
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is running in FIPS mode and to react to the special requirements this
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might impy.
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* ostruct
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* new methods:
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* OpenStruct#[], []=
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* OpenStruct#each_pair
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* OpenStruct#eql?
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* OpenStruct#hash
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* OpenStruct#to_h converts the struct to a hash.
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* extended method:
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* OpenStruct.new also accepts an OpenStruct / Struct.
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* pathname
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* extended method:
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* Pathname#find returns an enumerator if no block is given.
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* rake
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* rake has been updated to version 0.9.5.
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This version is backwards-compatible with previous rake versions and
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contains many bug fixes.
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See
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http://rake.rubyforge.org/doc/release_notes/rake-0_9_5_rdoc.html for a list
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of changes in rake 0.9.3, 0.9.4 and 0.9.5.
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* rdoc
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* rdoc has been updated to version 4.0
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This version is largely backwards-compatible with previous rdoc versions.
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The most notable change is an update to the ri data format (ri data must
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be regenerated for gems shared across rdoc versions). Further API changes
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are internal and won't affect most users.
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See https://github.com/rdoc/rdoc/blob/master/History.rdoc for a list of
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changes in rdoc 4.0.
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* resolv
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* new methods:
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* Resolv::DNS#timeouts=
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* Resolv::DNS::Config#timeouts=
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* rexml
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* REXML::Document#write supports Hash arguments.
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* REXML::Document#write supports new :encoding option. It changes
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XML document encoding. Without :encoding option, encoding in
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XML declaration is used for XML document encoding.
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* RubyGems
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* Updated to 2.0.0.preview2
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RubyGems 2.0.0 features the following improvements:
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* Improved support for default gems shipping with ruby 2.0.0+
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* A gem can have arbitrary metadata through Gem::Specification#metadata
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* `gem search` now defaults to --remote and is anchored like gem list.
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* Added --document to replace --rdoc and --ri. Use --no-document to
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disable documentation, --document=rdoc to only generate rdoc.
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* Only ri-format documentation is generated by default.
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* `gem server` uses RDoc::Servlet from RDoc 4.0 to generate HTML
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documentation.
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For an expanded list of updates and bug fixes see:
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https://github.com/rubygems/rubygems/blob/master/History.txt
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* shellwords
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* Shellwords#shellescape() now stringifies the given object using to_s.
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* Shellwords#shelljoin() accepts non-string objects in the given
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array, each of which is stringified using to_s.
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* syslog
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* Added Syslog::Logger which provides a Logger API atop Syslog.
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* Syslog::Priority, Syslog::Level, Syslog::Option and Syslog::Macros
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are introduced for easy detection of available constants on a
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running system.
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* tmpdir
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* incompatible changes:
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* Dir.mktmpdir uses FileUtils.remove_entry instead of
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FileUtils.remove_entry_secure. This means that applications should not
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change the permission of the created temporary directory to make
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accessible from other users.
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* yaml
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* Syck has been removed. YAML now completely depends on libyaml being
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installed.
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* zlib
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* Added streaming support for Zlib::Inflate and Zlib::Deflate. This allows
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processing of a stream without the use of large amounts of memory.
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* Added support for the new deflate strategies Zlib::RLE and Zlib::FIXED.
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* Zlib streams are now processed without the GVL. This allows gzip, zlib and
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deflate streams to be processed in parallel.
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=== Language changes
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* Added %i and %I for symbol list creation (similar to %w and %W).
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* Default source encoding is changed to UTF-8. (was US-ASCII)
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=== Compatibility issues (excluding feature bug fixes)
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* Array#values_at
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See above.
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* String#lines
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* String#chars
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* String#codepoints
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* String#bytes
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These methods no longer return an Enumerator, although passing a
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block is still supported for backwards compatibility.
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Code like str.lines.with_index(1) { |line, lineno| ... } no longer
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works because str.lines returns an array. Replace lines with
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each_line in such cases.
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* Signal.trap
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See above.
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* Merge Onigmo.
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https://github.com/k-takata/Onigmo
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* The :close_others option is true by default for system() and exec().
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Also, the close-on-exec flag is set by default for all new file descriptors.
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This means file descriptors doesn't inherit to spawned process unless
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explicitly requested such as system(..., fd=>fd).
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* Kernel#respond_to? against a protected method now returns false
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unless the second argument is true.
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* Dir.mktmpdir in lib/tmpdir.rb
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See above.
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* OpenStruct new methods can conflict with custom attributes named
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"each_pair", "eql?", "hash" or "to_h".
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* Thread#join, Thread#value
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See above.
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* Mutex#lock, Mutex#unlock, Mutex#try_lock, Mutex#synchronize and Mutex#sleep
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See above.
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