Kotlin Multiplatform Academy · Lesson

Validation Helpers on Your Models

Add reusable validation directly in shared code.

Models Can Check Themselves

A model should know what valid looks like. Adding validation to shared code means both apps enforce the same rules.

A computed property derives a value from the model's fields. It runs whenever you read it, with no stored state.

data class User(val name: String) {
  val isNamed: Boolean get() = name.isNotBlank()
}