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    Guided course · C# Language

    C# Internals: ref, in, out and Byref Aliasing: back to the course

    Module 5 · Copy Cost, Alias Cost and the GC · Lesson 17 of 44

    Mutating array elements in place, and ref iteration over Span<T>

    3 min readTechInterviewNotes Editorial TeamUpdated 16 Sept 2026Save

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    Its text, video and cheat sheet open with Full Access. This course's free lessons open without an account. Start with A value is not a variable, and assignment vs ref assignment.

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