isMemberOfClass in Swift

Question

The keyword is is equivalent to isKindOfClass.

But I am unable to find what is equivalent of isMemberOfClass in swift.

Note: My question is not about the difference between isKindOfClass or isMemberofclass rather the question is about what is the equivalent of isMemberofClass in Swift

somebody please clarify

Possible duplicate of [iPhone SDK difference between isKindOfClass and isMemberOfClass](http://stackoverflow.com/questions/3653929/iphone-sdk-difference-between-iskindofclass-and-ismemberofclass) — Tj3n, Sep 06 '16 at 11:26
No Its not duplicate because I am enquiring the equivalent of **isMemberOfClass** — RajuBhai Rocker, Sep 06 '16 at 11:29
Then check [this](http://stackoverflow.com/q/25476740/6541007). — OOPer, Sep 06 '16 at 11:31

score 19 · Accepted Answer · edited Mar 13 '19 at 14:44

19

You are looking for type(of:) (previously .dynamicType in Swift 2).

Example:

class Animal {}
class Dog : Animal {}
class Cat : Animal {}

let c = Cat()

c is Dog // false
c is Cat // true
c is Animal // true

// In Swift 3:
type(of: c) == Cat.self // true
type(of: c) == Animal.self // false

// In Swift 2:
c.dynamicType == Cat.self // true
c.dynamicType == Animal.self // false

edited Mar 13 '19 at 14:44

Ashley Mills

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answered Sep 06 '16 at 11:31

Grimxn

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use of unresolved identifier `type` error gets thrown – RajuBhai Rocker Sep 06 '16 at 11:38
1

You're using Swift 2. In Swift 3 it's `type(of: c)` in Swift 1 & 2 it was `c.dynamicType` – Grimxn Sep 06 '16 at 11:39
Thanks you saved my day ! – RajuBhai Rocker Sep 09 '16 at 16:23

score 2 · Answer 2 · answered Nov 13 '17 at 07:25

In case of optional variable type(of:) returns the type from initialization.

Example:

class Animal {}
class Cat : Animal {}

var c: Animal?
c = Cat()

type(of: c) // _expr_63.Animal>.Type
type(of: c) == Cat?.self // false
type(of: c) == Animal?.self // true

My class was inherited from NSObject, so I used its variable classForCoder and it worked for me.

class Animal : NSObject {}
class Cat : Animal {}

var c: Animal?
c = Cat()
c?.classForCoder == Cat.self // true

isMemberOfClass in Swift

2 Answers2