2017-06-20 70 views

回答

0

我已经实现了它这样的:

class Person { 
    var firstName: String 
    var lastName: String 
    private var fullNameBG: Observable<String> 
    var fullName: Observable<String> { 
     computedPropBG.next("\(firstName) \(lastName)") 
     return computedPropBG 
    } 
    init() { 
     fullNameBG = Observable("") 
    } 
} 

会很高兴地听到一个更好的解决方案。