Polymorphism
One of the Object Oriented Programming concept is the ability of polymorphism. The word, polymorphism is an ancient Greek term. It means many forms. In progr...
Recent Posts
Upcasting class
What is upcasting?
Abstract or Interface
An abstract class is like an ordinary class except one or more functions or properties is incomplete - ie. a function without implementation or a property wi...
Primary Constructor vs Secondary Constructor
A constructor is a special function that creates a new object. Using var or val in the parameter list makes them accessible from outside the object.
Ask for inheritance
Inheritance is a mechanism for creating a new class by reusing and modifying an existing class.
Making recursion more efficient with tailrec
What is recursion?
Folding and Reducing List
fold() combines all elements of a list, in order to generate a single result. Here is how we can use fold() to calculate the sum -
Elegant Local Function
What exactly is local function? It was new to me in Kotlin and thought it is interesting to dig deeper. In a normal class, we have many functions within a cl...