type-design-performance

To optimize .NET type design for performance, you should seal classes to prevent unnecessary virtual method calls, use readonly structs to ensure immutability, and leverage static pure functions to reduce overhead and improve testability.

Readonly structs improve C# application performance by enforcing value type immutability, which prevents the compiler from generating hidden defensive copies when accessing struct members, thereby reducing memory overhead and execution time.

You need to defer enumeration in .NET when handling large or chained data sets to avoid premature materialization, which prevents unnecessary memory allocation and keeps performance high until the data is actually required.

The best way to choose collections for high-performance .NET APIs is to use immutable collections, which provide a safe API boundary for data integrity while minimizing overhead and reducing the risk of unintended mutations.

Yes, you can use static pure functions to resolve .NET type design overhead by eliminating instance state dependencies, which enhances both computational performance and code testability without altering external behavior.