swift upcasting

Gifted Grivet answered on April 3, 2023 Popularity 3/10 Helpfulness 1/10

answer swift upcasting

swift upcasting

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Upcasting and downcasting are two types of type casting in Swift. Type casting is the process of checking the type of an instance and treating it as a different type within a class hierarchy.

Upcasting is when you cast an instance of a subclass to 
its superclass type. This is always safe and doesn't 
require a runtime check, because a subclass is guaranteed 
to have all the properties and methods of its superclass. 
When you upcast, you can only access the properties and methods 
that are defined in the superclass, not the ones that are specific 
to the subclass.

Popularity 3/10 Helpfulness 1/10 Language swift

Source: Grepper

Tags: swift upcasting

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Contributed on Apr 03 2023

Gifted Grivet

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