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    Guided course · C# Language

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

    Module 10 · Module Practice Tests and Final Mock · Lesson 39 of 44

    Practice Test: Copy Cost, Alias Cost and the GC

    12 min readTechInterviewNotes Editorial TeamUpdated 14 Oct 2026Save

    This lesson comes with Full Access

    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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