.filterNil, .filterEmpty ( RxSwift)

.filterNil()

Unwraps and filters out nil elements.

 

 

.filterEmpty()

Filter out empty occupiable elements

(Occupiable Protocol 을 conform 해야 사용 가능하다)

 

 

public protocol Occupiable {
    var isEmpty: Bool { get }
    var isNotEmpty: Bool { get }
}

public extension Occupiable {
    var isNotEmpty: Bool {
        return !isEmpty
    }
}