Kotlin for Beginners

Kotlin Basics

      Introduction to Kotlin

      Install Kotlin

            Installing Kotlin in command line mode

            Install kotlin using brew command

      Hello World program

      Setting up Kotlin in Eclipse

      Variables

Data types

      Data types

      nullable types

      Numbers

      Characters

      Convert character to Int

      Booleans

      Strings

      String template expressions

Arrays

      Arrays

      Define Array of nulls

      Define array using factory function

      Print array elements

Operators, Control flow statements

      Bit wise operators

      Logical Operators

      === vs ==

      Control flow statements

      if statement

      if-else statement

      if-else if-else

      Why there is no ternary operator in kotlin?

      when expression

      Using when as if-else if ladder

      Use When as expression

      for loop

      while, do-while loops

      break statement

      continue statement

Working with classes

      Classes and objects

      Declaring properties

      getters & setters

      Define member functions of class

      initialize member properties

      const: Compile time constants

      const vs val

      Late initialized properties

      Body of the class is optional

      Constructors

      Is Kotlin class requires body?

      Secondary Constructors

      Passing default values to primary constructor

      Default constructor

      Define private primary constructor

      How to create Object

      Any: Super class of all classes

      Inheritance

      Overriding methods

      Overriding properties

      Calling super class methods

      Nested classes

      Inner classes

      Interfaces

      Overriding conflict while implementing interfaces

      Object Expressions

      Define singleton objects

      Companion Objects

      Anonymous Inner classes

      Access super class of outer class from inner class

      Abstract classes

      ?.: Safe call operator: handle nullable types

      ?: Elvis operator

Functions

      Functions

      Call functions using parameter names

      Function default arguments

      varargs : Variable number of arguments

      unit (or) void functions

      Single Expression functions

      infix functions

      Local functions

      Member functions

      Tail recursive functions

      Higher Order function

      Lambda Expressions

      Anonymous functions

Packages, extensions, data classes and Generics

      Packages

      Access specifiers

      Extensions

      Extensions to companion object

      Scope of extension functions

      Declare extensions as members of other class

      Overriding extensions

      Data classes

      Data Classes: copy function

      Data classes: Destructuring declarations

      Generics

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