Instance Method インスタンスメソッド

isMember(of:)

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

Required. 必須。

Declaration 宣言 

func isMember(of aClass: AnyClass) -> Bool

Parameters パラメータ

aClass

A class object representing the Objective-C class to be tested.

Return Value 戻り値

true if the receiver is an instance of aClass, otherwise false.

Discussion 解説

For example, in this code, isMember(of:) would return false: 


NSMutableData *myData = [NSMutableData dataWithCapacity:30];
id anArchiver = [[NSArchiver alloc] initForWritingWithMutableData:myData];
if ([anArchiver isMemberOfClass:[NSCoder class]])
    ...

Class objects may be compiler-created objects but they still support the concept of membership. Thus, you can use this method to verify that the receiver is a specific Class object.

See Also 参照

Testing Object Inheritance, Behavior, and Conformance

func isKind(of: AnyClass) -> Bool
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。

func responds(to: Selector!) -> Bool
Returns a Boolean value that indicates whether the receiver implements or inherits a method that can respond to a specified message.

Required. 必須。

func conforms(to: Protocol) -> Bool
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。