Kotlin

An Introductory Tutorial

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Language Elements

Data Types

Extension Functions

Object Oriented Kotlin

Data Classes

Coroutines

Collections

Kotlin Example Codes

Kotlin Interview Questions

• Kotlin supports collections of type, List , Set and Map. Kotlin's Standard Library offers generic interfaces, classes, and functions for creating, populating, and managing collections of any type.


• List is an ordered collection Elemnts can be accessed by ordered indices, and can occure more than once.


• Set is a collection of unique elements. Order of elements do not matter.


• Map (or dictionary) is a set of key-value pairs. Keys are unique, and each maps to exactly one value, which can have duplicates.


• Kotlin supports both Mutable and Immutable collections. List, Set or Map of either read only (immutable collections) or List, Set and Map of both read-write option (Mutable collection).