What are the best immutable collection types in C#?

What are the best immutable collection types in C#?

In C#, some of the best immutable collection types include ImmutableArray, ImmutableList, ImmutableDictionary, and ImmutableHashSet. These collections are part of the System.Collections.Immutable namespace.

Can you explain why I should use immutable collections?

Using immutable collections can help prevent unintended side effects in your code, making it easier to reason about and maintain. They are also thread-safe by default, which is beneficial in multi-threaded applications.

How do I create an ImmutableList in C#?

You can create an ImmutableList using the ImmutableList.Create method. For example: var immutableList = ImmutableList.Create(1, 2, 3);.

Are there any performance considerations with immutable collections?

Yes, while immutable collections can provide safety and simplicity, they may have performance overhead due to the need to create new instances on modifications. It's important to evaluate their use based on your specific use case.