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What will happen by calling [super alloc] in a subclass' factory method?


What will happen by calling [super alloc] in a subclass' factory method?

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What will happen by calling [super alloc] in a subclass' factory method?
Tag : ios , By : Antony Briggs
Date : November 28 2020, 09:01 AM

I wish this help you Sample code as follow: , First, let us see an example
+ (instancetype)class2 {
    NSLog(@"%@", NSStringFromClass([super class]));
    return [[super alloc] init];
}

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Python: Calling subclass's method within super method call


Tag : python , By : helloedwin
Date : March 29 2020, 07:55 AM
wish help you to fix your issue The code you have posted does what you want.
When B.bar calls self.foo() when self is an object of type C, it will call C.foo.

Why do you not need to [super alloc] in your subclass init method implementation?


Tag : ios , By : Ray
Date : March 29 2020, 07:55 AM
this will help When we do self = [super init]; in our subclass's init method implementation, ,
I don't understand why it's not self= [[super alloc] init];
MyObject *someObject = [MyObject alloc];
someObject = [someObject init];

Can you get the name of the subclass calling a super method?


Tag : swift , By : user169463
Date : March 29 2020, 07:55 AM
To fix the issue you can do I typically add a create...:inContext: method to my NSManagedObject subclasses, which inserts and then initialises the object. So, for example: , I don't quite see why you don't use NSStringFromClass():
class Parent {
    class func whoami() -> String {
        return NSStringFromClass(self)
    }
}
class FirstChild : Parent {
}
class SecondChild : Parent {
}
class Parent {
    class func whoami() -> String {
        return String(self)
    }
}
class FirstChild : Parent {
}
class SecondChild : Parent {
}

Will a subclass use a super or sub class method when calling an inherited method (Java)


Tag : java , By : Sandip
Date : March 29 2020, 07:55 AM
hope this fix your issue It will call the one in the subclass. You could design an experiment to test for yourself:
class Super {
    void a() { System.out.println("super implementation"); }
    void b() { System.out.println("calling a()..."); a(); }
}


class Sub extends Super {
    void a() { System.out.println("sub implementation"); }
}


public class Main {
    public static void main(String[] args) {
        Sub x = new Sub();
        x.b();
        // Prints:
        //   calling a()...
        //   sub implementation
    }
}

Calling subclass method from super class


Tag : java , By : DotNetWise
Date : March 29 2020, 07:55 AM
I hope this helps you . You can't call a method in a subclass from a superclass.
After all, what if the instance is actually a different subclass?
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