Question

 class Test: NSObject {
    var product_id: String
    var size: String
    var color: String
    var desc: String
    var name: String

    init(arr: [String]) {
        product_id = arr[0]
        size = arr[1]
        color = arr[2]
        desc = arr[3]
        name = arr[4]
    }
}

let t1 = Test(arr: ["1", "S", "Blue", "111", "第一个商品"])
let t2 = Test(arr: ["1", "S", "Blue", "333", "第三个商品"])
let t3 = Test(arr: ["1", "S", "Blue", "666", "第六个商品"])
let t4 = Test(arr: ["1", "S", "Blue", "777", "第七个商品"])

let t5 = Test(arr: ["2", "S", "Blue", "222", "第二个商品"])
let t6 = Test(arr: ["2", "S", "Blue", "555", "第五个商品"])

let t7 = Test(arr: ["3", "S", "Blue", "444", "第四个商品"])

let initialSWSet = Set([t1, t2, t3, t4, t5, t6, t7])
initialSWSet.count

我期望initialSWSet.count == 3，换句话说，如果测试的product_id，size，color是相同的，那么测试是相同的.t1 == t2 == t3 == t4; t5 == t6; T7 我怎样才能完成这项工作？谢谢提前！

如何覆盖对象之间的“==”

0 个答案: