Optional parameters about moyasugar HOT 4 CLOSED

var params: Parameters? {
  switch self {
  case .cars(let offset, let sort): //here offset and sort are optionals
    return filterNil([
      "offset": offset,
      "sort": sort,
    ])
  }
}

var params: Parameters? {
  switch self {
  case .cars(let offset, let sort): //here offset and sort are optionals
    var parameters: [String: Any] = [:]
    if let offset = offset {
      parameters["offset"] = offset
    }
    if let sort = sort {
      parameters["sort"] = sort
    }
    return URLEncoding() => parameters
  }
}

    case .cars(let offset, let sort):
      return URLEncoding() => removeNilParameters(["offset": offset, "sort": sort])

  func removeNilParameters(_ dict: [String: Any?]) -> [String: Any] {
    var resultDict = [String: Any]()
    let notNilMembers = Array(dict.keys).filter { dict[$0]! != nil }
    for key in notNilMembers {
      resultDict[key] = dict[key]!
    }
    return resultDict
  }