🧊 Dictionary, ImmutableDictionary or FrozenDictionary: which one should you choose?

In this article, Carole Chevalier explains when to use Frozen, Immutable or ReadOnly collections in .NET, and how to choose the most suitable solution based on requirements for performance, immutability and maintainability.

In particular, you’ll learn about:
• the differences between Dictionary, ReadOnlyDictionary, ImmutableDictionary and FrozenDictionary 📚
• why Frozen Collections offer excellent read performance for immutable data ⚡
• the use cases where ImmutableDictionary is more appropriate 🔄
• the trade-offs between construction cost, memory usage and search speed 📈
• a decision matrix to help you choose the right collection for each scenario 🛠️

The result: a better understanding of .NET’s specialised collections, enabling you to write code that is more efficient, more robust and more explicit.