Rust's Superior Defaults: Preventing Dumb C++ Mistakes

This article highlights a common C++ pitfall: accidentally copying data instead of referencing it due to a missing ampersand (&). The author demonstrates how Rust's default move semantics and borrow checker prevent this subtle but performance-critical error. Using examples like `vec::retain`, the article shows how Rust's compiler proactively catches such mistakes at compile time, enhancing code reliability. While C++ offers mechanisms to avoid this, Rust's defaults are simpler and more effective, reducing cognitive load for developers. The comparison also touches upon idiomatic versus unidiomatic Rust code, showing that even non-conventional approaches are less prone to these errors in Rust.