Filter Array in Swift based on multiple properties

Question

struct User{
    var firstName:String
    var lastName:String
    var city:String
    var email:String
}

var users = [User]

I am trying to filter users as someone is typing in the textfield. Its like Search for the email. It should show all the matching results but shouldn’t duplicate the same user. I am able to filter the array based on one property such as name but not sure how to filter the array based on all the properties.

I’ve implemented the UITextField delegate and have this code for filtering.

let filteredArray = users.filter({ (user) -> Bool in
    return user.firstName.lowercased().contains(“John”)
})

Answer 1

let filteredArray = users.filter({ $0.firstName.lowercased().contains("firstName") || $0.lastName.lowercased().contains("lastName") || ... })