overriding

This question already has an answer here: Android @Override usage [duplicate] 4 answers When do you use Java's @Override annotation and why? 27 answers I am completely new to Android Studio and I want to know the purpose of the @Override statement in Android Studio. @Override is a Java annotation . It tells the compiler that the following method overrides a method of its superclass . For instance, say you implement a Person class. public class Person { public final String firstName; public final String lastName; //some methods @Override public boolean equals(Object other) { ... } } The person

Why do you need (in order to make it compile) the intermediate CloneImplementation and std::static_pointer_cast (see Section 3 below) to use the Clone pattern for std::shared_ptr instead of something closer (see Section 2 below) to the use of raw pointers (see Section 1 below)? Because as far as I understand, std::shared_ptr has a generalized copy constructor and a generalized assignment operator? 1. Clone pattern with raw pointers : #include <iostream> struct Base { virtual Base *Clone() const { std::cout << "Base::Clone\n"; return new Base(*this); } }; struct Derived : public Base { virtual

class Base {} abstract class A { abstract public List<Base> Items { get; set; } } class Derived : Base {} class B : A { private List<Derived> items; public override List<Derived> Items { get { return items; } set { items = value; } } } The compiler says that B.Items must be List of Base elements "to match overridden member" A.Items. How can i make that work? Eugene Podskal What you've tried to accomplish initially is impossible - .NET does not support co(contra)variance for method overload . The same goes for properties, because properties are just the pair of methods . But you can make your

I've spent hours trying to override the Magento block for the "Add store" and "Edit store" pages in an extension, to add another text box to it. After Going through books and Googling, I've found several solutions which people say are working, however not for me. One recommendation was this one . I've copied the supposedly correct solution from Lee Saferite which works for the original poster but not for me. Of course, I changed the values to the class I'm overriding and the new modified class. My config.xml (the relevant part): <global> <blocks> <adminhtml> <rewrite> <system_store_sdit_form