21CTO

Jul 26, 2024 · Fundamentals

What’s New in Rust 1.80? Lazy Initialization, cfg Checks, and Exclusive Ranges

Rust 1.80 introduces LazyCell and LazyLock for deferred data initialization, adds cfg name and value checking to catch configuration errors, supports exclusive range patterns for more concise matching, and stabilizes APIs such as Rc, Arc, Duration, Option, Seek, BinaryHeap, and NonNull, enhancing safety and ergonomics for developers.