Introduction to object-oriented programming in Kotlin First object-oriented app in Kotlin - Hello object world RollingDie in Kotlin - Constructors and random numbers Warrior for the arena in Kotlin Arena with warriors in Kotlin Inheritance and polymorphism in Kotlin Solved tasks for Kotlin lessons 1-2 Arena with a mage in Kotlin (inheritance and polymorphism) Companion objects in Kotlin Properties in Kotlin Date and Time in Kotlin - Creating and formatting Date and Time in Kotlin - Modifying and intervals Date and Time in Kotlin- Parsing and comparing Diary with a database in Kotlin Diary with a database in Kotlin (finishing) Solved tasks for Swift lessons 1-2 Introduction to Kotlin, the platform and IntelliJ Variables, type system and parsing in Kotlin More on the Kotlin type system: Data types Conditions (branching) in Kotlin Loops in Kotlin Multidimensional arrays in Kotlin Mathematical functions in Kotlin Reference data types in Kotlin Solved tasks for Kotlin lesson 3 Solved tasks for Kotlin lesson 4 Solved tasks for Kotlin lesson 5 Solved tasks for Kotlin lesson 7 Solved tasks for Kotlin lesson 8 Solved tasks for Kotlin lesson 9 Solved tasks for Kotlin lessons 10-11 Interfaces in Kotlin Type casting and object hierarchy in Kotlin Abstract class, comparing and operators in Kotlin Enumerated types and constants in Kotlin Equals(), clone() and data classes in Kotlin Final OOP in Kotlin - Boxing, packages, and more Solved tasks for Swift lesson 9 Solved tasks for Swift lesson 10-11 Solved tasks for Swift lesson 8 Introduction to collections and genericity in Kotlin Lists with arrays in Kotlin Multidimensional arrays in Kotlin Dictionaries and sets in Kotlin Solved tasks for Swift lesson 3 Solved tasks for Swift lesson 4 Solved tasks for Swift lesson 5 Solved tasks for Swift lesson 7 Report Premium Article Retraining Retraining Meetings Retraining Subscriptions Retraining Members Section Feedback TTS Type system: Null safety in Kotlin Report errors in TTS Arrays in Kotlin Strings in Kotlin - Working with single characters Strings in Kotlin - Split Activities