Copying Interface Values In Go

I am constantly thinking about the Go language and how things work. Lately I have been thinking how everything in Go is by value. We see this when we pass values to functions, when we iterate over slices and when we perform type assertions. In every case, copies of the values that are stored in these data structures are returned. When I first started learning Go this threw me off, but I have come to appreciate the reasonability this brings to our code....

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