[j-james]

Nim passes by value by default, which eliminates much of the complexity overhead of lifetimes and borrowing in most programs. (the compiler does optimize some of these into moves.)

But when you do want to pass by reference: that's where Nim's move semantics come in. These are what are fairly similar to Rust's lifetimes and borrowing, and what the paste.sr.ht link briefly goes over.

If you're interested, you can read more about Nim's move semantics here:

https://nim-lang.org/docs/destructors.html