Differentiate Between Function Overloading and Function Overriding

Differentiate between function overloading and function overriding

You are putting in place an overloading when you change the original types for the arguments in the signature of a method.

You are putting in place an overriding when you change the original Implementation of a method in a derived class.

Difference between overriding and overloading of a function in C++

overloading means functions with same name having different parameters , it does not really depend whether you are using procedural language or object oriented language you can do overloading. well as far as over riding is concerned it means we are explicitly defining a function that exist in base class in derived class . obviously you need object oriented language to perform over riding as it is done between base and derived classes.

What is function overloading and overriding in php?

Overloading is defining functions that have similar signatures, yet have different parameters. Overriding is only pertinent to derived classes, where the parent class has defined a method and the derived class wishes to override that method.

In PHP, you can only overload methods using the magic method __call.

An example of overriding:

<?php

class Foo {
   function myFoo() {
      return "Foo";
   }
}

class Bar extends Foo {
   function myFoo() {
      return "Bar";
   }
}

$foo = new Foo;
$bar = new Bar;
echo($foo->myFoo()); //"Foo"
echo($bar->myFoo()); //"Bar"
?>

what is function overloading and overriding in OOPS, explain in layman terms

Method Overriding

Method Overloading

Simple Explanation

Method Overriding is when a method defined in a superclass or interface is re-defined by one of its subclasses, thus modifying/replacing the behavior the superclass provides. The decision to call an implementation or another is dynamically taken at runtime, depending on the object the operation is called from. Notice the signature of the method remains the same when overriding.

Method Overloading is unrelated to polymorphism. It refers to defining different forms of a method (usually by receiving different parameter number or types). It can be seen as static polymorphism. The decision to call an implementation or another is taken at coding time. Notice in this case the signature of the method must change.

What is the difference between method overloading and overriding?

Method overloading deals with the notion of having two or more methods in the same class with the same name but different arguments.

void foo(int a)
void foo(int a, float b)

Method overriding means having two methods with the same arguments, but different implementations. One of them would exist in the parent class, while another will be in the derived, or child class. The @Override annotation, while not required, can be helpful to enforce proper overriding of a method at compile time.

class Parent {
    void foo(double d) {
        // do something
    }
}

class Child extends Parent {

    @Override
    void foo(double d){
        // this method is overridden.  
    }
}

difference between function hiding and overloading

The function B::print hides the parent function A::print.

If you want to overload you need to pull in the A::print function into the scope of B:

class B : public A {
public:
    using A::print;  // Pull in (all) A::print symbols into the scope of B

    void print(float);  // Now overloads A::print
};

What is the difference between operator overloading and operator overriding in C++?

Some use the latter term to describe what's being done when you defined an own global operator new or operator delete. That's because your own definition can replace the default version in the library. The C++ Standard uses the words replaces and displaces for this. Using "override" is a bit confusing because that term is already used for virtual functions being overridden by a function in a derived class.

The term "overloading" is the general term used for defining your own operator functions. This term is used even if no actual overloading happens by the operator function. One way to approach this term is because it "overloads" the built-in meaning of certain operators.

overloading vs overriding

In this case neither. The derived-class method hides the base-class method.

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