快速比较两个结构的值 [英] Compare value from two struct in swift

问题描述

我有两个结构体和两个与之对应的数组，我正在尝试比较两个数组值并将其打印在一个过滤数组中结构体并获得一个数组

I have two struct and two arrays corresponding to it and I am trying to compare the two array values and print it in one filtered array i did try and use filter but its giving me an error I want to compare an id from both the struct and get one single array

构造一个

struct One {
    let ID: String
    let name: String
    let lastName: String
}

阵列一

var oneData = [One]()
oneData = [One(ID: "1", name: "hello1", lastName: "last2"), One(ID: "1", name: "hello2", lastName: "last2"), One(ID: "2", name: "hello3", lastName: "last3"), One(ID: "3", name: "hello4", lastName: "last4")]

结构二

struct Two {
    let ID: String
    let name2: String
    let lastName2: String
}

数组二

var twoData = [Two]()
twoData = [Two(ID: "1", name2: "hello1", lastName2: "last1"), Two(ID: "2", name2: "hello2", lastName2: "last2"), Two(ID: "3", name2: "hello3", lastName2: "last3"), Two(ID: "4", name2: "hello4", lastName2: "last4"), Two(ID: "5", name2: "hello5", lastName2: "last5")]

我的过滤数组

var mainArray = [Two]()

我用来过滤的代码，这给了我一个错误

mainArray = oneData.filter{ $0.ID == twoData.contains(where: $0.ID)}

推荐答案

获取数组oneData的ID与ID匹配的对象数组 twoData 中的任何对象.您可以执行以下操作:

To get objects of array oneData whose ID matched with ID of any object from array twoData. You can do following:

    // Array One
    var oneData = [One]()
    oneData = [One(ID: "1", name: "hello1", lastName: "last2"),
               One(ID: "1", name: "hello2", lastName: "last2"),
               One(ID: "2", name: "hello3", lastName: "last3"),
               One(ID: "3", name: "hello4", lastName: "last4")]

    // Array Two
    var twoData = [Two]()
    twoData = [Two(ID: "1", name2: "hello1", lastName2: "last1"),
               Two(ID: "2", name2: "hello2", lastName2: "last2"),
               Two(ID: "3", name2: "hello3", lastName2: "last3"),
               Two(ID: "4", name2: "hello4", lastName2: "last4"),
               Two(ID: "5", name2: "hello5", lastName2: "last5")]

    let mainArray = oneData.filter { i in twoData.contains{ i.ID == $0.ID } }
    print(mainArray)

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