| // Result is a superpowered enum that can be Success or Failure | |
| // and the basis for a railway junction | |
| sealed class Result<T> | |
| data class Success<T>(val value: T): Result<T>() | |
| data class Failure<T>(val errorMessage: String): Result<T>() | |
| // Composition: apply a function f to Success results | |
| infix fun <T,U> Result<T>.then(f: (T) -> Result<U>) = | |
| when (this) { | |
| is Success -> f(this.value) |
#Intro
Kotlin is a new programming language for the JVM. It produces Java bytecode, supports Android and generates JavaScript. The latest version of the language is Kotlin M5.3
Kotlin project website is at kotlin.jetbrains.org.
All the codes here can be copied and run on Kotlin online editor.
Let's get started.
