or ``` ```class Human age Int val bithYearish Int = 2019 age kotlinlang #getting-started

or ``` ```class Human(age : Int) { val bithYe...

sitepodmatt

03/08/2019, 9:32 AM

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```class Human(age : Int) {

    val bithYearish : Int = (2019 - age).takeIf { age  > 0 } ?: throw Error("age no old enough")

}