In Rust, you often use stack allocation, which, as you pointed out, is much more efficient. There's some heap allocation in Rust, but in my experience it's actu

In Rust, you often use stack allocation, which, as you pointed out, is much more efficient. There's some heap allocation in Rust, but in my experience it's actually a minority of all allocations. Rust also has an Arena library (http://doc.rust-lang.org/0.11.0/arena/index.html http://doc.rust-lang.org/0.11.0/arena/index.html), which can be used for cases where you know that you have enough memory for a given operation and are willing to throw out the entire thing when the operation (or program ;) ) is done.