In addition to the Rust design making more sense for systems programming than Swift's, what Rust puts on the language-level is forward-compatible with future Un

In addition to the Rust design making more sense for systems programming than Swift's, what Rust puts on the language-level is forward-compatible with future Unicode versions. A future version of Unicode could define combining behavior for currently unassigned code points, which means that iterating by grapheme cluster will change as Swift becomes aware of new Unicode versions.