Protocol

NSObject

The group of methods that are fundamental to all Objective-C objects. 全てのObjective-Cオブジェクトにとって基本的なメソッドのグループ。

Declaration 宣言 

@protocol NSObject

Overview 概要

An object that conforms to this protocol can be considered a first-class object. Such an object can be asked about its:

  • Class, and the place of its class in the inheritance hierarchy.

  • Conformance to protocols.

  • Ability to respond to a particular message.

The Cocoa root class NSObject adopts this protocol, so all objects inheriting from NSObject have the features described by this protocol.

Topics 話題

Identifying Classes クラスの識別

- class
Returns the class object for the receiver’s class. レシーバのもつクラスのクラスオブジェクトを返します。

Required. 必須。

superclass
Returns the class object for the receiver’s superclass. レシーバのスーパークラスに対するクラスオブジェクトを返します。

Required. 必須。

Identifying and Comparing Objects

- isEqual:
Returns a Boolean value that indicates whether the receiver and a given object are equal. レシーバと与えられたオブジェクトが等しいかどうかを指し示すブール値を返します。

Required. 必須。

hash
Returns an integer that can be used as a table address in a hash table structure.

Required. 必須。

- self
Returns the receiver. レシーバを返します。

Required. 必須。

Testing Object Inheritance, Behavior, and Conformance

- isKindOfClass:
Returns a Boolean value that indicates whether the receiver is an instance of given class or an instance of any class that inherits from that class.

Required. 必須。

- isMemberOfClass:
Returns a Boolean value that indicates whether the receiver is an instance of a given class.

Required. 必須。

- respondsToSelector:
Returns a Boolean value that indicates whether the receiver implements or inherits a method that can respond to a specified message.

Required. 必須。

- conformsToProtocol:
Returns a Boolean value that indicates whether the receiver conforms to a given protocol. レシーバが指定したプロトコルに準拠するかどうかを指し示すブール値を返します。

Required. 必須。

Describing Objects オブジェクトの解説

description
A textual representation of the receiver.

Required. 必須。

debugDescription
A textual representation of the receiver to use with a debugger.

Sending Messages メッセージ送信

- performSelector:
Sends a specified message to the receiver and returns the result of the message.

Required. 必須。

- performSelector:withObject:
Sends a message to the receiver with an object as the argument.

Required. 必須。

- performSelector:withObject:withObject:
Sends a message to the receiver with two objects as arguments.

Required. 必須。

Identifying Proxies

- isProxy
Returns a Boolean value that indicates whether the receiver does not descend from NSObject.

Required. 必須。

Obsolete Methods

- retain
Increments the receiver’s reference count.

Required. 必須。

- release
Decrements the receiver’s reference count.

Required. 必須。

- autorelease
Decrements the receiver’s retain count at the end of the current autorelease pool block.

Required. 必須。

- retainCount
Do not use this method.

Required. 必須。

- zone
Zones are deprecated and ignored by most classes that have it as a parameter.

Required. 必須。

Relationships 関係

Inherited By 継承される先

Conforming Types これらの型が準拠

See Also 参照

Object Basics オブジェクト基礎

NSObject
The root class of most Objective-C class hierarchies, from which subclasses inherit a basic interface to the runtime system and the ability to behave as Objective-C objects. たいていのObjective-Cクラス階層のルートクラス、そこからサブクラスは基本的なインターフェイスとObjective-Cオブジェクトとして振舞う能力を継承します。
NSKeyValueCoding
A mechanism by which you can access the properties of an object indirectly by name or key. それによってあなたがあるオブジェクトのプロパティに名前またはキーによって間接的にアクセスできるある仕組み。