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検索結果
-
Object
# to _ ary -> Array (12.0) -
オブジェクトの Array への暗黙の変換が必要なときに内部で呼ばれます。 デフォルトでは定義されていません。
...すべての場面で代置可能であるような、
* 配列そのものとみなせるようなもの
という厳しいものになっています。
//emlist[][ruby]{
class Foo
def to_ary
[3,4]
end
end
it = Foo.new
p([1,2] + it) #=> [1, 2, 3, 4]
//}
@see Object#to_a,Kernel.#Array... -
Object
# to _ int -> Integer (12.0) -
オブジェクトの Integer への暗黙の変換が必要なときに内部で呼ばれます。 デフォルトでは定義されていません。
...が使われるすべての場面で代置可能であるような、
* 整数そのものとみなせるようなもの
という厳しいものになっています。
//emlist[][ruby]{
class Foo
def to_int
1
end
end
ary = [:a, :b, :c]
p(ary[Foo.new]) # => :b
//}
@see Kernel.#Integer... -
Object
# to _ str -> String (12.0) -
オブジェクトの String への暗黙の変換が必要なときに内部で呼ばれます。 デフォルトでは定義されていません。
...面で代置可能であるような、
* 文字列そのものとみなせるようなもの
という厳しいものになっています。
//emlist[][ruby]{
class Foo
def to_str
'Edition'
end
end
it = Foo.new
p('Second' + it) #=> "SecondEdition"
//}
@see Object#to_s,Kernel.#String...