sliskiCode

val receiver: String = "Fructos"

val block: String.() -> Unit = {
    println(toUpperCase())
    println(toLowerCase())
    println(capitalize())
}
        
val result: Unit = with<String, Unit>(receiver, block)

sliskiCode

fun access(contract: Contract,
           employee: Employee) = when (contract to employee) {
    PROBATION to SENIOR_ENGINEER,
    PROBATION to REGULAR_ENGINEER -> NotGranted(AssertionError("Access not allowed on probation contract."))
    PERMANENT to SENIOR_ENGINEER,
    PERMANENT to REGULAR_ENGINEER,
    PERMANENT to JUNIOR_ENGINEER,
    CONTRACTOR to SENIOR_ENGINEER -> Granted(DateTime(1))
    CONTRACTOR to REGULAR_ENGINEER,
    PROBATION to JUNIOR_ENGINEER,

sliskiCode

fun access(contract: Contract,
           employee: Employee) = when (Pair(contract, employee)) {
    Pair(PROBATION, SENIOR_ENGINEER),
    Pair(PROBATION, REGULAR_ENGINEER),
    Pair(PROBATION, JUNIOR_ENGINEER) -> NotGranted(AssertionError("Access not allowed on probation contract."))
    Pair(PERMANENT, SENIOR_ENGINEER),
    Pair(PERMANENT, REGULAR_ENGINEER),
    Pair(PERMANENT, JUNIOR_ENGINEER),
    Pair(CONTRACTOR, SENIOR_ENGINEER) -> Granted(DateTime(1))
    Pair(CONTRACTOR, REGULAR_ENGINEER),

sliskiCode

fun access(employee: Employee,
           contract: Contract): SafariBookAccess {
    return when (employee) {
        SENIOR_ENGINEER -> when (contract) {
            PROBATION -> NotGranted(AssertionError("Access not allowed on probation contract."))
            PERMANENT -> Granted(DateTime())
            CONTRACTOR -> Granted(DateTime())
        }
        REGULAR_ENGINEER -> when (contract) {
            PROBATION -> NotGranted(AssertionError("Access not allowed on probation contract."))

sliskiCode

fun access(employee: Employee,
           contract: Contract): SafariBookAccess

sliskiCode

sealed class SafariBookAccess

data class Granted(val expirationDate: DateTime) : SafariBookAccess()

data class NotGranted(val error: AssertionError) : SafariBookAccess()

data class Blocked(val message: String) : SafariBookAccess()

sliskiCode

enum class Employee {
    DEV_LEAD,
    SENIOR_ENGINEER,
    REGULAR_ENGINEER,
    JUNIOR_ENGINEER
}

enum class Contract {
    PROBATION,
    PERMANENT,

sliskiCode

public final void sugar(@NotNull Response response) {
   Intrinsics.checkParameterIsNotNull(response, "response");
  
   String var3;
   if (response instanceof Success) {
      var3 = ((Success)response).getBody();
      System.out.println(var3);
   } else if (response instanceof Error) {
      var3 = "" + ((Error)response).getCode() + ' ' + ((Error)response).getMessage();
      System.out.println(var3);

sliskiCode

fun sugar(response: Response) = when (response) {
    is Success -> println(response.body)
    is Error -> println("${response.code} ${response.message}")
    Timeout -> println(response.javaClass.simpleName)
}

sliskiCode

fun sugar(response: Response) = when (response) {
    is Success -> ...
    is Error -> ...
    Timeout -> ...
}