Just like structures, we can use classes to model everyday objects. And the syntax looks awfully similar.
Here’s the basic syntax for creating a class:
class Name {
}
The class
keyword followed by a class name creates the class. By convention, the class name is capitalized. And just like structures, classes also contain both properties and methods.
Suppose we are writing a program for a school to keep track of all the students. Then we can create a blueprint for this type of data by using a class.
Here’s a Student
class that models a student:
class Student { var name: String var year: Int var gpa: Double var honors: Bool }
The Student
class has four properties:
.name
of the typeString
.year
of the typeInt
.gpa
of the typeDouble
.honors
of the typeBool
We can also use Swift’s default property values so that the Student
class can have predefined values inside the class:
class Student { var name = "" var year = 0 var gpa = 0.0 var honors = false }
Now when we create a new instance of Student
, that instance’s .name
will be an empty string ""
, its .year
will be 0
, and so on.
Instructions
Create a Restaurant
class with the following properties:
.name
with a default value of""
.type
with a default value of[""]
.rating
with a default value of0.0
.delivery
with a default value offalse