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検索結果
先頭5件
-
int NIL
_ P(VALUE obj) (26100.0) -
obj が Qnil のとき真。
...obj が Qnil のとき真。... -
Object
:: NIL -> NilClass (18235.0) -
非推奨です。 nil と同じ。
...非推奨です。 nil と同じ。
この定数は過去との互換性のために提供されています。擬似変数 nil を使ってください。
Ruby では false と nil が偽として扱われます。
偽でない値(false でも nil でもない値) は全て真とみなされま... -
NilClass
# nil? -> bool (9113.0) -
常に true を返します。
...常に true を返します。
//emlist[例][ruby]{
nil.nil? # => true
//}... -
MiniTest
:: Assertions # assert _ nil(object , message = nil) -> true (6224.0) -
与えられたオブジェクトが nil である場合、検査にパスしたことになります。
...与えられたオブジェクトが nil である場合、検査にパスしたことになります。
@param object 任意のオブジェクトを指定します。
@param message 検査に失敗した場合に表示するメッセージを指定します。
文字列か Proc......を指定します。Proc である場合は Proc#call した
結果を使用します。
@raise MiniTest::Assertion 与えられたオブジェクトが nil でない場合に発生します。... -
Object
# nil? -> bool (6135.0) -
レシーバが nil であれば真を返します。
...レシーバが nil であれば真を返します。
p false.nil? #=> false
p nil.nil? #=> true
@see NilClass... -
Object
# must _ be _ nil -> true (6129.0) -
自身が nil である場合、検査にパスしたことになります。
...自身が nil である場合、検査にパスしたことになります。
@raise MiniTest::Assertion 自身が nil でない場合に発生します。
@see MiniTest::Assertions#assert_nil... -
NilClass (6048.0)
-
nil のクラス。 nil は NilClass クラスの唯一のインスタンスです。 nil は false オブジェクトとともに偽を表し、 その他の全てのオブジェクトは真です。
...nil のクラス。
nil は NilClass クラスの唯一のインスタンスです。
nil は false オブジェクトとともに偽を表し、
その他の全てのオブジェクトは真です。... -
JSON
:: Ext :: Generator :: GeneratorMethods :: NilClass (6000.0) -
Alias of JSON::Generator::GeneratorMethods::NilClass
...Alias of JSON::Generator::GeneratorMethods::NilClass... -
JSON
:: Generator :: GeneratorMethods :: NilClass (6000.0) -
NilClass に JSON で使用するインスタンスメソッドを追加するためのモジュールです。
...NilClass に JSON で使用するインスタンスメソッドを追加するためのモジュールです。... -
NilClass
# =~(other) -> nil (3129.0) -
右辺に正規表現オブジェクトを置いた正規表現マッチ obj =~ /RE/ をサポートするためのメソッドです。常に nil を返します。
...現マッチ obj =~ /RE/
をサポートするためのメソッドです。常に nil を返します。
@param other 任意のオブジェクトです。結果に影響しません。
//emlist[例][ruby]{
obj = 'regexp'
p(obj =~ /re/) #=> 0
obj = nil
p(obj =~ /re/) #=> nil
//}
@see String#=~... -
JSON
:: Generator :: GeneratorMethods :: NilClass # to _ json(state _ or _ hash = nil) -> String (3107.0) -
自身から生成した JSON 形式の文字列を返します。
...る JSON 形式の文字列をカスタマイズするため
に JSON::State のインスタンスか、
JSON::State.new の引数と同じ Hash を
指定します。
//emlist[例][ruby]{
require "json"
nil.to_json # => "null"
//}...