如何打印变量的名称而不是 Swift 中的值？

Question

我希望代码打印变量的名称而不是值。它只是不想工作。

我没有尝试太多，因为我不知道该怎么做。我也无法在网上找到太多关于此的文档。

import UIKit

var a = 1
var b = 2
var c = 3
var d = 4
var e = 1
var f = 2
var g = 3
var h = 4
var i = 1
var j = 2
var k = 3
var l = 4

var suggestedGroup1 = 16

var classStudents = [a,b,c,d,e,f,g,h,i,j,k,l]
var groupsNumber = 3
var peoplePerGroup = classStudents.count / groupsNumber

var totalClassPoints = a + b + c + d + e + f + g + h + i + j + k + l

var OnePerson = classStudents.randomElement()
var TwoPerson = classStudents.randomElement()
var ThreePerson = classStudents.randomElement()
var FourPerson = classStudents.randomElement()

suggestedGroup1 = OnePerson! + TwoPerson! + ThreePerson! + FourPerson!

while suggestedGroup1 != 10 {
    OnePerson = classStudents.randomElement()
    TwoPerson = classStudents.randomElement()
    ThreePerson = classStudents.randomElement()
    FourPerson = classStudents.randomElement()
    suggestedGroup1 = OnePerson! + TwoPerson! + ThreePerson! + FourPerson!

}

if suggestedGroup1 == 10 {
    print ("Group 1 is made up of", OnePerson!, ",", TwoPerson!, ",", ThreePerson!, "and", FourPerson!)
}

当它打印（“第 1 组由”、OnePerson！、“、”、TwoPerson！、“、”、ThreePerson！、“和”、FourPerson！）时，我想要这个人的名字，而不是他们的“价值”。

Answer 1

您需要一个单独的方法，我创建了一个结构并为其指定名称和值。这是不言自明的，如果您不明白任何部分，请告诉我。

import UIKit

struct StudentClass {
    let name: String
    let value: Int
}

var a = StudentClass(name: "a", value: 1)
var b =  StudentClass(name: "b", value: 2)
var c =  StudentClass(name: "c", value: 3)
var d =  StudentClass(name: "d", value: 4)
var e =  StudentClass(name: "e", value: 1)
var f =  StudentClass(name: "f", value: 2)
var g =  StudentClass(name: "g", value: 3)
var h =  StudentClass(name: "h", value: 4)
var i =  StudentClass(name: "i", value: 1)
var j =  StudentClass(name: "j", value: 2)
var k =  StudentClass(name: "k", value: 3)
var l =  StudentClass(name: "l", value: 4)

var suggestedGroup1 = 16

var classStudents = [a,b,c,d,e,f,g,h,i,j,k,l]
var groupsNumber = 3
var peoplePerGroup = classStudents.count / groupsNumber

var totalClassPoints = a.value + b.value + c.value + d.value + e.value + f.value + g.value + h.value + i.value + j.value + k.value + l.value

var OnePerson = classStudents.randomElement()
var TwoPerson = classStudents.randomElement()
var ThreePerson = classStudents.randomElement()
var FourPerson = classStudents.randomElement()

suggestedGroup1 = OnePerson!.value + TwoPerson!.value + ThreePerson!.value + FourPerson!.value

while suggestedGroup1 != 10 {
    OnePerson = classStudents.randomElement()
    TwoPerson = classStudents.randomElement()
    ThreePerson = classStudents.randomElement()
    FourPerson = classStudents.randomElement()
    suggestedGroup1 = OnePerson!.value + TwoPerson!.value + ThreePerson!.value + FourPerson!.value

}

if suggestedGroup1 == 10 {
    print ("Group 1 is made up of", OnePerson!.name, ",", TwoPerson!.name, ",", ThreePerson!.name, "and", FourPerson!.name)
}

这是输出：-

Group 1 is made up of h , k , f and e