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C++ 2022-02-23 04:00:07
pure virtual function in c++
#include <iostream> #include <string> //Pure virtual function or inteface allows us to define a function in a base class that doesn't have an implementation or definition in the base class and force sub classes to implement that function //P... Add solution -
Javascript 2022-01-28 06:20:36
node import all functions from file
//we are in ./utils/dbHelper.js, here we have some helper functions function connect() { // connect do db... } function closeConnection() { // close connection to DB... } //let's export this function to show them to the world outside module.exports ... Add solution -
Python 2022-01-24 17:40:25
metaclass python
A metaclass is the class of a class. A class defines how an instance of the class (i.e. an object) behaves while a metaclass defines how a class behaves. A class is an instance of a metaclass. While in Python you can use arbitrary callables for metaclass... Add solution -
Other 2022-01-24 05:26:33
where T : class, new()
public void MakeCars() { //This won't compile as researchEngine doesn't have a public constructor and so can't be instantiated. CarFactory<ResearchEngine> researchLine = new CarFactory<ResearchEngine>(); var researchEngine = resear... Add solution -
Java 2021-11-22 11:21:37
what is method overriding in java
Method overloading is providing two separate methods in a class with the same name but different arguments, while the method return type may or may not be different, which allows us to reuse the same method name. Method overriding means defining a method... Add solution -
Java 2021-11-22 11:21:37
what is method overriding in java
Method overloading is providing two separate methods in a class with the same name but different arguments, while the method return type may or may not be different, which allows us to reuse the same method name. Method overriding means defining a method... Add solution -
Java 2021-11-22 11:21:29
what is method overriding in java
Method overloading is providing two separate methods in a class with the same name but different arguments, while the method return type may or may not be different, which allows us to reuse the same method name. Method overriding means defining a method... Add solution -
Java 2021-11-22 11:21:28
what is method overriding in java
Method overloading is providing two separate methods in a class with the same name but different arguments, while the method return type may or may not be different, which allows us to reuse the same method name. Method overriding means defining a method... Add solution -
Other 2021-11-22 05:26:37
where design pattern factory is used
where design pattern factory is used The Factory Method pattern is generally used in the following situations: A class cannot anticipate the type of objects it needs to create beforehand. A class requires its subclasses to specify the objects it creates.... Add solution
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