I am trying to instantiate an object from a class in swift. When I instantiate I am getting this error:
'Human'cannot be constructed because it has no accessible initializers
My Codes:
class Human{
var firstName: String
var lastName : String
var age : Int
var spouseName: String?
var childName : String?
var currentSpeed: Double = 0
func walk(speedIncrease: Double){
currentSpeed += speedIncrease*2
}
func brake(){
self.currentSpeed = 0
}
}
let tanvir = Human(firstName: "tanvir", lastName:"Alam", age: 32, currentSpeed:30)
print("gmk")
What am I doing wrong? Please Explain. Thank You.
Unlike structs where the initializer is synthesized classes require an explicit init
method.
Add
init(firstName : String, lastName: String, age: Int, currentSpeed: Double = 0.0 {
self.firstName = firstName
self.lastName = lastName
self.age = age
self.currentSpeed = currentSpeed
}
and remove the default value of currentSpeed
A much simpler solution is to replace class
with struct
.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.