C#•21h ago

✅ IEnumerable vs IReadOnlyCollection

Hello, I have a scenario where I'm not sure which one should be used. The collection is only used internally, and only read operations are performed on it. Iteration on the collection happens once per method call. Which one is more appropriate in this case?

2 Replies

ero•21h ago

The concrete collection type returned, not an interface So List<T>, or T[], or whichever If it's all internal, then there's no reason for abstraction

CoreOP•21h ago

I see, thanks

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✅ IEnumerable vs IReadOnlyCollection

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