Either

Effect<E, A>

suspend Raise<E>.() -> A

Either

(suspend) Raise<E>.() -> A

private suspend inline fun <reified A : Any> KtorCtx.respond(
    statusCode: HttpStatusCode,
    noinline action: suspend Raise<ServiceError>.() -> A
): Unit = effect(action).fold(
    { error ->
        when (error) {
            is ServiceError -> call.respond(BadRequest, error)
//            is UserAlreadyExists -> call.respond(Conflict, "${error.user} already exists")
//            is UserNotFound -> call.respond(NotFound, "User with id ${error.id} not found")
        }
    }) { a -> call.respond(statusCode, a) }

suspend fun one(): Either<String, Int> = TODO("")

fun two(): Effect<String, Int> =
  effect { one().bind() }

suspend fun three(): Either<String, Int> =
  either { two().bind() }

suspend fun

one

three

val one: Either<String, Int> = 1.right()
val two: Effect<String, Int> = effect { 1 }

one

two

suspend fun

Either

Effect

EagerEffect

suspend