basictrystruct1.kt

sealed class Try<out T> {
 
    class Success<T>(private val result: T) : Try<T>()
 
    class Failure<T>(private val throwable: Throwable) : Try<T>()
 
 
    companion object {
        fun <T> of(block: () -> T) = try {
            Success(block())
        } catch (e: Throwable) {
            Failure(e)
        }
    }
}