[physicsyogi]

The cost of Rust's abstractions are largely at compile time, not at runtime. For example, see https://idursun.com/posts/rust_zero_cost_abstractions_in_act... or https://carette.xyz/posts/zero_cost_abstraction/.

[johnnycerberus]

The complexity that comes from the zero-cost abstractions promoted by both C++ and Rust here isn’t in performance (not runtime nor compiletime) but in programmer reasoning and refactoring.