Struct does not conform to protocol 'Hashable'

Question

I wish to create an array which will only hold unique instances of a struct:

  var vowelSet: Set<NotificationStruct>

Here is my struct:

struct NotificationStruct{
    let dateHeader: String
    let sensorName: String
    let message: String
    let time: String
}

yet I keep getting the error: "does not conform to protocol 'Hashable'" here is what I tried:

 struct NotificationStruct<T: Hashable>{

`struct NotificationStruct: Hashable`, implement the required methods, or wait for Swift 4.1 to have them implemented by compiler :) — Cristik, Mar 02 '18 at 16:44
Gah! I hate when I waste time on an answer only to have the question deleted or closed out from under me before I can post it ... If you need a `Set` of unique values, see here: https://developer.apple.com/documentation/swift/hashable — mc01, Mar 02 '18 at 16:58

score 0 · Answer 1 · answered Mar 02 '18 at 16:46

0

In the original question you are saying an array but creating a Set. Do you need something like this:

struct NotificationStruct {
    let sensorName :String
    let message :String
}

var vowelsArray = [NotificationStruct]()

answered Mar 02 '18 at 16:46

azamsharp

2

You should ask for a clarification in a comment. This "answer" really isn't an answer. – rmaddy Mar 02 '18 at 16:49
but i dont want any duplicates in array... I can setting for Set – fred shmed Mar 02 '18 at 16:49
When you are adding to the array then at that point you can check for duplicates. @rmaddy You can be a little nicer :) – azamsharp Mar 02 '18 at 16:50
@azamsharp Sorry, in what way wasn't I being nice? I simply posted a suggestion. Please don't read intent that isn't there. – rmaddy Mar 02 '18 at 16:54
ok that link above provided with the solution fixed my Struct, but how do I make an instance of it? this didnt work: let xd = Set = Set – fred shmed Mar 02 '18 at 16:58
1

`var xd = Set()` – vacawama Mar 02 '18 at 17:05

1 Answers1