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検索結果
先頭5件
-
TracePoint
# self -> object (18213.0) -
イベントを発生させたオブジェクトを返します。
...イベントを発生させたオブジェクトを返します。
以下のようにする事で同じ値を取得できます。
//emlist[例][ruby]{
trace.binding.eval('self')
//}
@see TracePoint#binding......返します。
以下のようにする事で同じ値を取得できます。
なお、self メソッドは binding が nil になる :c_call および :c_return イベントに対しても正しく動作します。
//emlist[例][ruby]{
trace.binding.eval('self')
//}
@see TracePoint#binding... -
Matrix
# -(m) -> Matrix (18132.0) -
self から行列mを減算した行列を返します。 self の column_size が 1 なら Vector オブジェクトも指定出来ます。
...
self から行列mを減算した行列を返します。
self の column_size が 1 なら Vector オブジェクトも指定出来ます。
@param m 減算する行列。減算可能な行列やベクトルを指定します。
@raise ExceptionForMatrix::ErrDimensionMismatch 次元が合わな... -
Array
# -(other) -> Array (18118.0) -
自身から other の要素を取り除いた配列を生成して返します。
...自身から other の要素を取り除いた配列を生成して返します。
要素の同一性は Object#eql? により評価されます。
self 中で重複していて、other中に存在していなかった要素は、その重複が保持されます。
@param other 自身から取り......換を試みます。
@raise TypeError 引数に配列以外の(暗黙の型変換が行えない)オブジェクトを
指定した場合に発生します。
//emlist[例][ruby]{
[1, 2, 1, 3, 1, 4] - [4, 2] # => [1, 1, 3, 1]
[1, 2, 1, 3, 1, 4] - [1, 4] # => [2, 3]
//}......@raise TypeError 引数に配列以外の(暗黙の型変換が行えない)オブジェクトを
指定した場合に発生します。
//emlist[例][ruby]{
[1, 2, 1, 3, 1, 4] - [4, 2] # => [1, 1, 3, 1]
[1, 2, 1, 3, 1, 4] - [1, 4] # => [2, 3]
//}
@see Array#difference... -
Date
# -(x) -> Rational | Date (18117.0) -
x が日付オブジェクトなら、ふたつの差を Rational で返します。単位は日です。 あるいは x が数値ならば、self より x 日前の日付を返します。
...x が日付オブジェクトなら、ふたつの差を Rational で返します。単位は日です。
あるいは
x が数値ならば、self より x 日前の日付を返します。
@param x 日数、あるいは日付オブジェクト
@raise TypeError x が数値でも日付オブジェ... -
Benchmark
:: Tms # -(x) -> Benchmark :: Tms (18116.0) -
self と x の減算を計算します。
...
self と x の減算を計算します。
@param x Benchmark::Tms のオブジェクトか Float に暗黙の変換ができるオブジェクトです。
@return 計算結果は新しい Benchmark::Tms オブジェクトです。
@see Benchmark::Tms#memberwise... -
Vector
# -(v) -> Vector | Matrix (18116.0) -
self からベクトル v を減じたベクトルを返します。
...
self からベクトル v を減じたベクトルを返します。
v には column_size が 1 の Matrix オブジェクトも指定できます。
その場合は返り値も Matrix オブジェクトになります。
@param v 減算するベクトル。減算可能な行列やベクトルを... -
BigDecimal
# -(other) -> BigDecimal (18106.0) -
差を計算します。
...差を計算します。
@param other self から引く数を指定します。
計算結果の精度についてはlib:bigdecimal#precisionを参照してください。... -
Object
# yield _ self -> Enumerator (6260.0) -
self を引数としてブロックを評価し、ブロックの結果を返します。
...
self を引数としてブロックを評価し、ブロックの結果を返します。
//emlist[例][ruby]{
"my string".yield_self {|s| s.upcase } # => "MY STRING"
3.next.yield_self {|x| x**x }.to_s # => "256"
//}
値をメソッドチェインのパイプラインに次々と渡すの......良い使い方です。
//emlist[メソッドチェインのパイプライン][ruby]{
require 'open-uri'
require 'json'
construct_url(arguments).
yield_self {|url| URI(url).read }.
yield_self {|response| JSON.parse(response) }
//}
ブロックなしで呼び出されたときは Enumerator......返します。
例えば条件によって値を捨てるのに使えます。
//emlist[][ruby]{
# 条件にあうので何もしない
1.yield_self.detect(&:odd?) # => 1
# 条件に合わないので値を捨てる
2.yield_self.detect(&:odd?) # => nil
//}
@see Object#tap... -
Object
# yield _ self {|x| . . . } -> object (6260.0) -
self を引数としてブロックを評価し、ブロックの結果を返します。
...
self を引数としてブロックを評価し、ブロックの結果を返します。
//emlist[例][ruby]{
"my string".yield_self {|s| s.upcase } # => "MY STRING"
3.next.yield_self {|x| x**x }.to_s # => "256"
//}
値をメソッドチェインのパイプラインに次々と渡すの......良い使い方です。
//emlist[メソッドチェインのパイプライン][ruby]{
require 'open-uri'
require 'json'
construct_url(arguments).
yield_self {|url| URI(url).read }.
yield_self {|response| JSON.parse(response) }
//}
ブロックなしで呼び出されたときは Enumerator......返します。
例えば条件によって値を捨てるのに使えます。
//emlist[][ruby]{
# 条件にあうので何もしない
1.yield_self.detect(&:odd?) # => 1
# 条件に合わないので値を捨てる
2.yield_self.detect(&:odd?) # => nil
//}
@see Object#tap... -
String
# -@ -> String | self (6246.0) -
self が freeze されている文字列の場合、self を返します。 freeze されていない場合は元の文字列の freeze された (できる限り既存の) 複製を返します。
...
self が freeze されている文字列の場合、self を返します。
freeze されていない場合は元の文字列の freeze された (できる限り既存の) 複製を返します。
//emlist[例][ruby]{
# frozen_string_literal: false
original_text = "text"
frozen_text = -original_......# => true
original_text == frozen_text # => true
original_text.equal?(frozen_text) # => false
original_text = "text".freeze
frozen_text = -original_text
frozen_text.frozen? # => true
original_text == frozen_text # => true
original_text.equal?(frozen_text) # => tr... -
Vector
# -@ -> self (6217.0) -
単項演算子の - です。 各要素の符号を反転したベクトルを返します。
...単項演算子の - です。 各要素の符号を反転したベクトルを返します。... -
Object
# itself -> object (6216.0) -
self を返します。
...
self を返します。
//emlist[][ruby]{
string = 'my string' # => "my string"
string.itself.object_id == string.object_id # => true
//}...