ruby/doc/NEWS

444 строки
8.0 KiB
Plaintext

: tsort module
Imported. Topological sorting library.
: stringio module
Imported. Pseudo (({IO})) class from/to (({String})).
: Array#pack, String#unpack
allows comment in template strings.
: Array#pack, String#unpack
new templates 'q' and 'Q' for 64bit integer (signed and unsigned respectively).
: Array#fill
takes block to get the values to fill.
: Array#new
takes block to get the values to fill.
: Array#fetch
takes block to get the default value.
: Hash#update
takes block to resolve key conflict.
: IO#fsync
Added.
: Array expansion
Fixed with the following behavior:
a = *[1]
p a #=> [1]
Now 1-element array in rhs is expanded properly.
a = *[1]
p a #=> 1
: allocation framework
any instance of class can be allocated by class.allocate,
(except a few classes).
: break and next
Extended to take an optional expression, which is used as a value
for termination. [experimental]
: comparison of exception classes in a rescue clause
Changed to use Module#=== for comparing $! with the exception
class specified in each rescue clause.
As the previous behavior was to use kind_of?, the effect is limited
to the SystemCallError case. SystemCallError.=== has been newly
defined to return true when the two have the same errno. With this
change, SystemCallError's with the same errno, such as Errno::EAGAIN
and Errno::EWOULDBLOCK, can both be rescued by listing just one of
them.
: constants lookup
Improved at the performance of searching by using an internal hash
table.
: expression parenthesis in the first argument
Experimentally altered to get the following code (note the space
after p):
p ("xx"*2).to_i
Interpreted as:
p (("xx"*2).to_i)
Instead of:
(p("xx"*2)).to_i
: implicit comparison in conditional expressions
is obsoleted except when it is used in -e.
: between Range and $.
Use explicit comparison instead.
: between Regexp and $_
Use the unary method ~/re/ instead.
: to_str
Added to get objects which define to_str() treated as String's.
Now almost all the built-in methods try each argument with to_str()
when they expect it to be a String.
foo = Object.new
class <<foo
def to_str
"foo"
end
end
p File.open(foo)
=> -:7:in `open': wrong argument type Object (expected String) (TypeError)
ruby 1.6.4 (2001-04-19) [i586-linux]
=> -:7:in `open': No such file or directory - "foo" (Errno::ENOENT)
ruby 1.7.0 (2001-05-02) [i586-linux]
: pp module
Imported. Prity Printing library.
: open
Extended so that when the third argument is permission flags it
calls open(2) instead of fopen(3).
: Array#fetch
Added.
: Array#insert(n, other, ...)
Added. [ruby-talk:14289]
This is much the same as (({ary[n,0] = [other,...]})) except
returing self.
ary = [0,1,2,3]
ary[2, 0] = [4, 5, 6]
p ary
ary = [0,1,2,3]
ary.insert(2, 4, 5, 6)
p ary
: Array#sort!
Changed to always return self without checking whether the sequence
of the elements was modified or not.
Beware that this behavior is not guaranteed to continue in the
future. Do not rely on its return value. [ruby-dev:12506]
: Curses
Updated. New methods and constants for using the mouse, character
attributes, colors and key codes have been added.
: Dir#path
Added.
: Dir.chdir
Extended to take a block.
: Dir.glob
Made to support meta-character escaping by a backslash. Wildcards
and spaces may now be escaped using a backslash.
: Dir.open
Changed to return what the block returns when a block is given, just
as File.open does. (It always returned (({nil})) in 1.6 and
prior)
: Dir.chdir
Changed to warn only when invoked from multiple threads or no block
is given. [ruby-dev:13823]
Dir.chdir('foo') {
Dir.chdir('bar') { # previously warned
puts Dir.pwd
}
}
: Enumerable#all?
: Enumerable#any?
: Enumerable#inject
: Enumerable#sort_by
Added.
: File#fnmatch, File::Constants::FNM_*
Added. Refer to the fnmatch(3) manpage for details.
e.g.
# exclude files matching "*.bak".
files.reject! {|fn| File.fnmatch?("*.bak", fn) }
: File.lchmod
: File.lchown
Added.
: IO#puts
do not treat Array specially.
: IO.for_fd
Added.
: IO.read
Added. [ruby-talk:9460]
: Interrupt
Made a subclass of SignalException. (It was a subclass of
Exception in 1.6 and prior)
: Marshal
Fixed not to dump anonymous classes/modules.
Fixed with loading modules.
: MatchData#to_ary
Added for convenience of Regexp#match. [ruby-dev:12766]
Previously we had to do:
foo, bar, baz = /(\w+?)\s+(\w+?)\s+(\w+)/.match("foo bar baz").to_a[1..-1]
p [foo, bar, baz]
But now can do:
_, foo, bar, baz = /(\w+?)\s+(\w+?)\s+(\w+)/.match("foo bar baz")
p [foo, bar, baz]
: Math.acos(x)
: Math.asin(x)
: Math.atan(x)
: Math.cosh(x)
: Math.hypot(x,y)
: Math.sinh(x)
: Math.tanh(x)
Added.
: Method#==
Added.
: Module#include?
Added. [ruby-dev:13941]
: Module#included
Added. This is a hook called after Module#append_feature.
: Module#method_removed
: Module#method_undefined
Added.
: Module.new, Class.new
Extended to take block.
: Multiple assignment behavior
Fixed so that "*a = nil" results in "a == []".
: NameError and NoMethodError
Moved and now NoMethodError < NameError < StandardError.
: NoMethodError
Added. [ruby-dev:12763]
: NotImplementError
Finally obsoleted. Use NotImplementedError.
: Object#singleton_method_removed
: Object#singleton_method_undefined
Added.
: Proc#==
Added.
: Proc#yield
Added. This is equivalent to Proc#call except it does not check the
number of given arguments, which are thus passed to the proc as-is.
: Process.times
Moved from Time.times. (Time.times still remains but emits a
warning)
: Process.waitall
Added.
: Process::Status
Added. (({$?})) is now an instance of this class.
: Range#step([step=1])
Added.
: Range#to_ary
Added. You can now do something like this:
a, b, c = 1..3
: Regexp#options
Added.
: Regexp.last_match(n)
Extended to take an optional argument.
: Signal
Added. This module has module functions Signal.trap and Signal.list.
: Socket.pack_sockaddr_in, Socket.unpack_sockaddr_in
Added. Utility for direct Socket access.
: Socket.pack_sockaddr_un, Socket.unpack_sockaddr_un
Added. Utility for direct Socket access.
: String#[regexp, nth]
Extended to accepts optional second argument.
tries match between self and REGEXP, then returns the
content of the NTH regexp register.
: String#casecmp
Added. This is a case insensitive version of String#<=>.
: String#chomp
if $/ == '\n', chops off last newlines (any of \n, \r, \r\n).
: String#eql?
Changed to be always case sensitive.
: String#insert(n, other)
Added.
This is much the same as (({str[n, 0] = other})) except returing
self.
: String#lstrip, rstrip, lstrip!, rstrip!
Added. These strip only left or right part of a string.
: String#match
Added.
: String/Array methods
returns an instance of receivers class.
: String.new
The first argument becomes optional.
: Symbol#intern
Added.
: Symbol.all_symbols
Added. [ruby-dev:12921]
: SystemCallError.===
Added. (See the "Comparison of exception classes in a rescue clause"
paragraph above) [ruby-dev:12670]
: SystemExit#status
Added.
: TCPServer#listen, UNIXServer#listen
Added.
: TCPSocket.new
: TCPSocket.open
Extended to take an address and a port number for the local side in
optional 3rd and 4th arguments.
: Time
Extended to accept a negative time_t. (Only when the platform
supports it)
p Time.at(-1)
=> Thu Jan 01 08:59:59 JST 1970
: Time#to_a
: Time#zone
Made to return "UTC" under gmtime. It used to return a platform
dependent value, typically "GMT", in 1.6 and prior.
To be investigated:
Sat Feb 24 03:15:49 2001 Yukihiro Matsumoto <matz@ruby-lang.org>
* io.c (set_stdin): preserve original stdin.
* io.c (set_outfile): preserve original stdout/stderr.