Compare value from two struct in swift

Question

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 m

Answer 1

your mainArray is of type [Two] and you are trying to put data of type [One] in mainArray. According to swift this is wrong you cannot do this.

you can do it in another way let me post it in 10 mins

You have 2 options now either make common protocol like and confirm the structs with it and make the mainArray of that protocol type as follows:

protocol Identifiable {
    var id: String {get set}
    var name: String {get set}
    var lastName: String {get set}
}

struct One: Identifiable{
    var id: String
    var name: String
    var lastName: String
}

struct Two: Identifiable{
    var id: String
    var name: String
    var lastName: String
}

now make the main Array of type Identifiable as follows

 var mainArray = [Identifiable]()

and filter as follows

 mainArray = oneData.filter{ i in twoData.contains { i.id == $0.id }}

Another option is do not make the protocol Identifiable and let the structs be as they were before. And just make the mainArray of type [One] just dont forget to change the change in filter line i.e From this:

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

To this:

 mainArray = oneData.filter{ i in twoData.contains { i.id == $0.id }}