Clean Code with Kotlin by Magda Miu - Functions 1 - Clean Code

CleanFunctions1.kt

fun parseProduct(response: Response?) = when (response?.code()){
    null -> throw ClientException("Response is null")
    200, 201 -> mapToDTO(response.body())
    in 400..499 -> throw ClientException("Invalid request")
    in 500..599 -> throw ClientException("Server error")
    else -> throw ClientException("Error ${response.code()}")
}