Kotlin Learning

In this repository I will document my Kotlin learning process as I read through Kotlin in Action, by Dmitry Jemerov and Svetlana Isakova.

I will try to comment my code and organize it well. I will also try to create README files in each chapter directory to explain which Kotlin files are for which parts of the book. Please make a PR if you find anything to add, modify, or remove.

Contents:

There is no chapter one in this repository because it is just background information about the Kotlin language.

• Chapter 2: Kotlin basics
  • 2.1: Basic elements: functions and variables | BasicElements.kt
  • 2.2: Classes and properties | ClassesProperties.kt
  • 2.3: Representing and handling choices: enums and “when” | Choices.kt
  • 2.4: Iterating over things: “while” and “for” loops | Iterating.kt
  • 2.5: Exceptions in Kotlin | Exceptions.kt
• Chapter 3: Defining and calling functions
  • 3.1: Creating collections in Kotlin | Collections.kt
  • 3.2: Making functions easier to call | CallingFunctions.kt
  • 3.3: Adding methods to other people’s classes: extension functions and properties | Extensions.kt
  • 3.4: Working with collections: varargs, infix calls, and library support | WorkingWithCollections.kt
  • 3.5: Working with strings and regular expressions | StringsRegex.kt
  • 3.6: Making your code tidy: local functions and extensions | LocalFunctions.kt
• Chapter 4: Classes, objects, and interfaces
  • 4.1: Defining class hierarchies | ClassHierarchies.kt
  • 4.2: Declaring a class with nontrivial constructors or properties | NontrivialClasses.kt
  • 4.3: Compiler-generated methods: data classes and class delegation | DataClasses.kt
  • 4.4: The “object” keyword: declaring a class and creating an instance, combined | ObjectKeyword.kt
• Chapter 5: Programming with lambdas
  • 5.1: Lambda expressions and member references | LambdaExpressions.kt
  • 5.2: Functional APIs for collections | FunctionalAPIsCollections.kt
  • 5.3: Lazy collection operations: sequences | Sequences.kt
  • 5.4: Using Java functional interfaces | JavaFunctionalInterfaces.kt
  • 5.5: Lambdas with receivers: “with” and “apply” | LambdasWithReceivers.kt
• Chapter 6: The Kotlin type system
  • 6.1: Nullability | Nullability.kt
  • 6.2: Primitive and other basic types | PrimitiveTypes.kt
  • 6.3: Collections and arrays | CollectionsArrays.kt
• Chapter 7: Operator overloading and other conventions
  • 7.1: Overloading arithmetic operators | ArithmeticOperators.kt
  • 7.2: Overloading comparison operators | ComparisonOperators.kt
  • 7.3: Conventions used for collections and ranges | CollectionsRanges.kt
  • 7.4: Destructuring declarations and component functions | Destructuring.kt
  • 7.5: Reusing property accessor logic: delegated properties | DelegatedProperties.kt
• Chapter 8: Higher-order functions: lambdas as parameters and return values
  • 8.1: Declaring higher-order functions | HigherOrderFunctions.kt
  • 8.2: Inline functions: removing the overhead of lambdas | InlineFunctions.kt