Yes, Rust also makes it quite easy to minimize reference count bumps. Rc values are moved by default, which introduces no traffic, and increments are explicit calls to `clone`. You can have both optimizations together!
It's even possible to share an Rc-managed value across threads without switching to Arc, as long as the other thread(s) never needs to change the reference count and can be "scoped" (https://doc.rust-lang.org/stable/std/thread/fn.scope.html) to some lifetime that some particular Rc outlives.
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Yes, Rust also makes it quite easy to minimize reference count bumps. Rc values are moved by default, which introduces no traffic, and increments are explicit calls to `clone`. You can have both optimizations together!
It's even possible to share an Rc-managed value across threads without switching to Arc, as long as the other thread(s) never needs to change the reference count and can be "scoped" (https://doc.rust-lang.org/stable/std/thread/fn.scope.html) to some lifetime that some particular Rc outlives.
That could similarly work for Arc values to minimize the atomic bumping.
Yes, Arc values are also moved by default. I was referring to both.