Question

我有数组中的对象我想排序

let person = Person()
person.isHome = true
person.firstname = "Foo"
person.surname = "Bar"

等...

我取了所有的人

guard let allPeople = controller.fetchedObjects as? Array<Person> else { return }

现在我想过滤和排序

var homeArray = allPeople
        .filter { $0.isHome == true }
        .sort { $0.surname < $1.surname }

一切都很好...除了，如果我想要额外的＆＃39;排序描述符＆＃39;像这样...

var homeArray = allPeople
        .filter { $0.isHome == true }
        .sort { $0.surname < $1.surname }
        .sort { $0.firstname < $1.firstname }
        .sort { $0.isOut == true && $1.isOut == false }

我仍然希望他们按姓氏排序，但我也希望他们在姓氏之后按名字排序并且在非受伤之上受伤...这是什么语法？我似乎无法在任何地方找到它......我是否必须回到使用NSArray？

是否像

一样简单

.sort { ($0.isOut == true && $1.isOut == false) && ($0.firstname < $1.firstname) && ($0.surname < $1.surname)}

Answer 1

let new = [person,person1,person2,person3,person4]

var homeInArray = new
.filter { $0.isHome == true &&  $0.isInjured == true }
var homeNINArray = new
.filter { $0.isHome == true &&  $0.isInjured == false }


 var newHomeArray =    homeInArray.sort { $0.firstName < $1.firstName } + homeNINArray.sort { $0.firstName < $1.firstName }

试试这个解决方案......

多属性排序Swift数组

1 个答案: