Kotlin Generics : Part 2 — Variance and Star Projections

Hey Kotlin enthusiasts! 👋 Welcome back to our Kotlin Series, where we explore all the awesomeness Kotlin has to offer. In the first part 🔄 of our Kotlin Generics, we covered the basics — what Generics are, how they enable type safety and flexibility, and why they’re a powerful tool for writing reusable code. We covered the concepts like generic classes, functions, and type constraints, as well as the difference between Generics and Any. If you haven’t read it, below’s the link!

Kotlin Generics: Part1 🚀

But there’s more to Generics. 💡 In this article, we’re going to level up by diving into advanced concepts of Kotlin Generics.

And hey, we’ve been holding a secret, all our articles are available for free. Here’s the link for this one. Enjoy (˵ ¬ᴗ¬˵)

Here’s what we’ll cover in Part 2:

🔍 What We’ll Explore:

• Variance: Understanding how the in and out keywords help manage subtypes in generics.
• Star Projections: Dealing with unknown types in generics.