map Create populated in Swift

In Swift, a hash is created using the Hashable protocol which requires the implementation of a hashValue property. Here is an example of creating a simple Person struct and implementing the Hashable protocol:

struct Person: Hashable {
    var name: String
    var age: Int
func hash(into hasher: inout Hasher) {

        hasher.combine(name)

        hasher.combine(age)

    }

}

In the above example, the Person struct has two properties name and age. The Hashable protocol is implemented by defining a hash(into:) method that accepts a Hasher object and combines it with the properties using the combine method of the Hasher object.

Here is an example of how you can create a hash using the Person struct:

let person = Person(name: "John", age: 30)
let hashValue = person.hashValue
print(hashValue) //Output: 4749090083845659664

In this example, a Person object is created with name "John" and age 30. The hash(into:) method is called on the Person object to generate a hash value which is then printed to the console.

Additionally, you can also create a hash with a Dictionary. Here is an example:

var persons: [Person: String] = [:]
persons[Person(name: "John", age: 30)] = "Engineer"
persons[Person(name: "Jane", age: 28)] = "Doctor"
print(persons) //Output: [Person(name: "John", age: 30): "Engineer", Person(name: "Jane", age: 28): "Doctor"]

In this example, a dictionary is created with keys as Person objects and values as Strings. Two Person objects are added to the dictionary along with their corresponding values. The hashValue property of the Person objects is used to uniquely identify them in the dictionary.