Poorna Soysa

💡𝐂# 𝐓𝐢𝐩 - 𝘆𝗶𝗲𝗹𝗱 𝗿𝗲𝘁𝘂𝗿𝗻

Working with large datasets in C#? Loading everything into memory can slow apps down and eat up resources. That’s where yield return comes in - a simple yet powerful way to stream data, one item at a time, only when needed.

📌 What is yield return?

yield return lets methods act as iterators, producing elements lazily rather than building a full collection upfront.

The method can return IEnumerable, IEnumerable<T>, IAsyncEnumerable<T>, or even IEnumerator<T>.

📌 Why use it?

✅ Memory Efficiency – Keeps memory usage low by not holding entire collections in memory.
✅ Lazy Processing – Generates values only when the consumer iterates over them.
✅ Readable Code – Makes complex data-generation logic cleaner and easier to follow.

📌 This is especially useful when:

✅ Working with very large collections
✅ Streaming data from files, databases, or APIs
✅ Returning partial results without precomputing everything

💬 What about you? Have you used yield return in your projects? Share your experience below 👇

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2 weeks ago | [YT] | 40