uni

unique.swift

//: Playground - noun: a place where people can play

import UIKit

struct Obj {
    let id: String
    init(id: String) {
        self.id = id
    }
}

extension Obj: Equatable {}
func ==(lhs: Obj, rhs: Obj) -> Bool {
    return lhs.id == rhs.id
}

extension Array where Element: Equatable{
    var unique: [Element] {
        var uniqueValues: [Element] = []
        forEach { item in
            if !uniqueValues.contains(item) {
                uniqueValues += [item]
            }
        }
        return uniqueValues
    }
}

let one = Obj(id: "beep")
let two = Obj(id: "beep")
let three = Obj(id: "boop")

var arr = [one, two, three]
var uniq: [Obj] = arr.unique
print(uniq)