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Monix Adventures
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Monix Adventures

Luke Stephenson https://github.com/lukestephenson/monix-adventures

Prerequisites

  • Scala
  • Understanding of scala.concurrent.Future

First steps

https://github.com/lukestephenson/monix-adventures

  • Star the project!
  • Install sbt - brew install sbt
  • Download the internet - sbt test

Modelling results

  • Synchronous execution
val fahrenheit: Int = c * 9 / 5 + 32
  • Asynchronous execution
val result: F[User] = loadUserFromDb()
  • So we need some F to represent an asynchronous computation

Asynchronous execution

Eager

val result: Future[User] = loadUserFromDb()

Lazy

val result: Task[User] = loadUserFromDb()

Lazy asynchronous execution

val result: Task[User] = loadUserFromDb()
result.delayExecution(1.second)
  • Just data
  • Control of side effect execution
  • Referential transparency
  • Laws

Multiple values

Synchronous execution

val iterable: Iterable[Int] = List(1, 2, 3).toIterable

Asynchronous execution

val result: Iterable[Future[String]] = readLinesFromAPI()

Note: What does this mean? As values are pulled from the Iterable, those Futures are not complete. Iterable is a data structure which doesn't model / represent asynchronous behaviour.

Multiple asynchronous values

val result: Observable[String] = readLinesFromAPI()

Note: Asynchrony is a first class citizen

Start coding

https://github.com/lukestephenson/monix-adventures

Ask for help