Tag: property
-
What are the ways to customise initialization process in Swift?
We can customise the initialization process by the following three ways: By assigning unique input parameters (parameter names, argument labels) By setting optional type properties By assigning constant property values.
-
How to override property observers in Swift?
We can use property overriding to set property observers to inherited properties. We cannot add property observers to inherited constant stored properties or inherited read-only computed properties.
-
How to override property getters and setters in Swift?
We can override inherited properties( both stored and computed ) and provide custom getter or setter as required. We must always type the name and type of property that we are overriding. We can provide a inherited read-only property as read – write property but cannot override a read- write property as read-only property.
-
Assigning to self within a mutating method in Swift
Mutating methods can assign an entirely new instance to the implicit self property.
-
Self property in Swift
Every instance of a type has a implicit property called self. This property refers to the current instance itself within its own methods. When a method parameter name is same as one of the properties defined inside a instance, then the parameter name takes precedence and Swift will treat both the parameter name and instance property […]
-
Overriding in Swift
A subclass can provide its own custom implementation of an instance method, type method, instance property ,type property and subscripts that it inherits from its superclass. This is known as overriding. In order to override a property or method, we have to include the override keyword as a prefix before the method, property or subscript that […]
-
Type property syntax in Swift
Type properties can have both stored and computed properties. In case of structures and enums, the stored and computed properties declared with a keyword static. In case of class, static keyword is used for both stored and computed properties but incase of property that can be overridden in subclass, class keyword is used instead for computed property. Stored type properties can […]
-
What are Type properties in Swift?
Instance properties are properties that belong to particular instance of type. We can also define type properties that belong to the type itself. There will be only one copy of these properties irrespective of number of instance of this type. All the instances will have access to same property value. Type properties can have both […]
-
Explain willSet and didSet property observers in Swift?
We can use either one or both of the following property observers to observe and respond to property changes. willSet is called just before the value is changed. didSet is called immediately after the new value is set. If we implement the willSet property observer, it is passed with the new value as a constant […]