Remove duplicated in a Struct Array - swift

Question

I am filtering an array that can have a value where there are multiple Models of the same name, only they have different model numbers.
Variables
var modelArray = [model]()
Struct
struct model {
var modelName = String();
var modelNumber = String();
var manufacturer = String();
var phiTypeCode = String();
var phiTypeDesc = String();
}
Filter
var filteredArray = self.modelArray.filter { $0.manufacturer.range(of: manufacturerVar, options: .caseInsensitive) != nil }
This produces the correct filtered Array, only due to the possibility of similar models with different model numbers, I am trying to remove duplicates from filteredArray.
Fairly new to swift I don't have a great deal of experience making the struct hashable to be able to use the suggested solutions.
Hopefully this is more clear

Answer 1

First off, I tried making a sample in my PlayGround.
Conform your model model to the protocal Equatable, like so:
struct Car: Equatable {
var modelName = String()
var manufacturer = String()
init(modelName: String, manufacturer: String) {
self.modelName = modelName
self.manufacturer = manufacturer
}
static func == (lhs: Car, rhs: Car) -> Bool {
return lhs.modelName == rhs.modelName
}
}
In the code above, we're assuming that the modelName is the primary key of your model.
Now make a function that enumerates your data source and returns a new data source after checking the element one by one, like so:
// returns unique array
func unique(cars: [Car]) -> [Car] {
var uniqueCars = [Car]()
for car in cars {
if !uniqueCars.contains(car) {
uniqueCars.append(car)
}
}
return uniqueCars
}
Finally, you now have the function to generate a new unique data source.
Example:
// Variable
var cars = [Car]()
// Adding data models to data source
let car1 = Car(modelName: "Kia Picanto", manufacturer: "Kia")
let car2 = Car(modelName: "Honda XX", manufacturer: "Honda")
let car3 = Car(modelName: "Honda XX", manufacturer: "Honda")
cars.append(car1)
cars.append(car2)
cars.append(car3)
// Now contains only two elements.
let uniqueCars = unique(cars: cars)