Swift 3 array contains multiple objects by property

Question

I've two structs, a User and Chat

struct User {
    let appId: String
}

struct Chat {
    var users: [User]
}

So if you can see a chat can have multiple users.

let u1 = User(appId: "12345")
let u2 = User(appId: "6789")
let chat = Chat(users: [u1, u2])

Now I'd like to detect if these two users are inside the chat, maybe by the appId

I tried

let contains = chat.users.contains { inUser -> Bool in
    return inUser.appId == "12345" && inUser.appId == "6789"
}

But for sure that will not work.

Someone can help me? Thanks!

Luca Angeletti · Accepted Answer · 2017-05-10 08:43:48Z

1

Since you want to know if u1 and u2 are into the chat you should write

let bothInChat = chat.users.contains { $0.appId == "12345" } && chat.users.contains { $0.appId == "6789" }

answered May 10, 2017 at 8:43

Luca Angeletti

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1 Comment

Dooooh, that easy one ... thank's a lot. I thought too complicated.