How do different C# collections perform in terms of speed and memory usage?

How do different C# collections perform in terms of speed and memory usage?

The performance of C# collections varies significantly. For example, List<T> is generally faster for indexed access, while Dictionary<TKey, TValue> offers faster lookups.

What about the performance of HashSet compared to List?

HashSet<T> is optimized for fast lookups and ensures uniqueness, making it faster than List<T> for membership tests, but it uses more memory.

Are there any scenarios where I should prefer using LinkedList?

Yes, LinkedList<T> is beneficial when you need frequent insertions and deletions, especially in the middle of the collection, as it doesn't require shifting elements.

How can I measure the performance of these collections?

You can use benchmarking tools like BenchmarkDotNet to measure the performance of different collections under various scenarios.