On: Should small Rust structs be passed by-copy or by-borrow? (2019)

[elimerl]

The idea is that the "default" is the easy thing, which is usually optimized by the compiler.

[TillE → elimerl]

When you're writing in a language like Rust or C++, you know broadly what the compiler optimizes and what it probably won't. You do need to do the work yourself a lot of the time.