Visitor Design Pattern
Explore the Visitor design pattern in Kotlin to understand how it helps manage and traverse complex tree-like structures. Learn how to extract data and add behaviors to container elements using Kotlin's language features like smart casts and immutability. This lesson also compares the pattern with other behavioral designs and highlights practical use cases.
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The Visitor design pattern is usually a close friend of the Composite design pattern. It can either extract data from a complex tree-like structure or add behavior to each node of the tree, much like the Decorator design pattern does for a single object.
Now, let’s sat the software architect from the previous example has made a plan to get the workers do the work, so that they just have to manage them. Their request-answering system from the Chain of Responsibility lesson worked quite well, but they are afraid some developers have begun to suspect that they’re a bit of a fraud. To confuse them, they plan to produce weekly emails with links to all the latest ...
