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    Guided course · C# Language

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

    Module 4 · Ref Returns and Escape Rules · Lesson 16 of 44

    Two readonly dimensions, and a preview of Span<T>

    2 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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