Code snippets for the `value-based classes and error-handling` Medium article.

value-based-exceptions-example.kt

data class Password private constructor(val value: String) {
  companion object {
    fun of(value: String): Password {
      return when {
        value.isTooShort() -> throw PasswordTooShortException()
        value.containsNoNumbers() -> throw PasswordContainsNoNumbersException()
        else -> Password(value)
      }
    }
  }
}

class PasswordTooShortException() : Exception("Password is too short!")
class PasswordContainsNoNumbersException() : Exception("Password contains no numbers!")