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...
Recent Posts
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...
Sequence: lazy evaluation
What is Sequence? A Kotlin Sequence is like a List, but you can only iterate. You cannot index into Sequence. And this restriction produces very efficient ch...
Zipping and Flattening List
List Manipulation