Web Reference: Want to learn more? Take the full course at https://learn.datacamp.com/courses/scalable-data-processing-in-r at your own pace. More than a video, you'll lea... R copies your data when you modify it — but only when necessary. Learn how copy-on-modify works, how to detect copies, and how to avoid them. I would like to understand the logic R uses when passing arguments to functions, creating copies of variables, etc. with respect to the memory usage. When does it actually create a copy of the variable vs. just passing a reference to that variable?
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