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Fixnum
# bit _ length -> Integer (24297.0) -
self を表すのに必要なビット数を返します。
...: ceil(log2(int < 0 ? -int : int+1)) と同じ結果
(-2**12-1).bit_length # => 13
(-2**12).bit_length # => 12
(-2**12+1).bit_length # => 12
-0x101.bit_length # => 9
-0x100.bit_length # => 8
-0xff.bit_length # => 8
-2.bit_length......-1.bit_length # => 0
0.bit_length # => 0
1.bit_length # => 1
0xff.bit_length # => 8
0x100.bit_length # => 9
(2**12-1).bit_length # => 12
(2**12).bit_length # => 13
(2**12+1).bit_length # => 13
@see Bignum......#bit_length... -
Integer
# bit _ length -> Integer (24291.0) -
self を表すのに必要なビット数を返します。
...og2(int < 0 ? -int : int+1)) と同じ結果][ruby]{
(-2**12-1).bit_length # => 13
(-2**12).bit_length # => 12
(-2**12+1).bit_length # => 12
-0x101.bit_length # => 9
-0x100.bit_length # => 8
-0xff.bit_length # => 8
-2.bit_length # => 1
-1.bit_length......# => 0
0.bit_length # => 0
1.bit_length # => 1
0xff.bit_length # => 8
0x100.bit_length # => 9
(2**12-1).bit_length # => 12
(2**12).bit_length # => 13
(2**12+1).bit_length # => 13
//}
@see Integer#size... -
Bignum
# bit _ length -> Integer (24279.0) -
self を表すのに必要なビット数を返します。
...例: ceil(log2(int < 0 ? -int : int+1)) と同じ結果
(-2**10000-1).bit_length # => 10001
(-2**10000).bit_length # => 10000
(-2**10000+1).bit_length # => 10000
(-2**1000-1).bit_length # => 1001
(-2**1000).bit_length # => 1000
(-2**1000+1).bit_length # => 1000......(2**1000-1).bit_length # => 1000
(2**1000).bit_length # => 1001
(2**1000+1).bit_length # => 1001
(2**10000-1).bit_length # => 10000
(2**10000).bit_length # => 10001
(2**10000+1).bit_length # => 10001
@see Fixnum#bit_length... -
Integer
# size -> Integer (3106.0) -
整数の実装上のサイズをバイト数で返します。
...整数の実装上のサイズをバイト数で返します。
//emlist[][ruby]{
p 1.size # => 8
p 0x1_0000_0000.size # => 8
//}
@see Integer#bit_length... -
NEWS for Ruby 3
. 0 . 0 (12.0) -
NEWS for Ruby 3.0.0 このドキュメントは前回リリース以降のバグ修正を除くユーザーに影響のある機能の変更のリストです。
...* Keyword arguments are now separated from positional arguments.
Code that resulted in deprecation warnings in Ruby 2.7 will now
result in ArgumentError or different behavior. 14183
* Procs accepting a single rest argument and keywords are no longer
subject to autosplatting. This now......accepting a single rest argument and no keywords.
16166
//emlist[][ruby]{
pr = proc{|*a, **kw| [a, kw]}
pr.call([1])
# 2.7 => [[1], {}]
# 3.0 => [[[1]], {}]
pr.call([1, {a: 1}])
# 2.7 => [[1], {:a=>1}] # and deprecation warning
# 3.0 => a=>1}, {}]
//}
* Arguments forwarding (`...`) now......ecking a class and a object multiple times in a method when possible.
* Optimize accesses in some core classes like Hash and their subclasses.
* Method inlining support for some C methods
* `Kernel`: `#class`, `#frozen?`
* `Integer`: `#-@`, `#~`, `#abs`, `#bit_length`, `#...