Master Scala Rest APIs in 3 Simple Concepts: Illustrated Guide with Tapir, http4s, and Circe! (3/3)

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• Master Scala Rest APIs in 3 Simple Concepts: Illustrated Guide with Tapir, http4s, and Circe! (1/3)
• Master Scala Rest APIs in 3 Simple Concepts: Illustrated Guide with Tapir, http4s, and Circe! (2/3)
• 👉 Master Scala Rest APIs in 3 Simple Concepts: Illustrated Guide with Tapir, http4s, and Circe! (3/3)

🧙‍♂️ Crack ADTs!

Theory

Algebraic Data Types (ADTs) are a way of defining data structures by combining simpler types through two main constructs: Sum Types, representing a choice between alternatives, and Product Types, representing a combination of different types.

Blablabla 🤪, remember that it’s commonly just a sealed trait, like this for example (refer to comments if you want to understand in detail):

sealed trait Pet // It's an ADT because "Product types" and "Sum types"
object Pet {
  case class Dog(name: String,
                  age: Int) // 👈 "Product types" because "(String, Int)" == More complex type by combining types
      extends Pet // "Sum types" because "Dog != Cat != Fish != Bird but Dog + Cat + Fish + Bird = Pet" == Distinct types when united define the type
  case class Cat(name: String…