Result::as_deref and Result::as_deref_mut : Useful for working with references inside Result types.
Rust version 1.47.0, released on , was a focused update primarily delivering quality-of-life improvements, library stabilizations, and toolchain upgrades rather than major new language features. Key Language & Tooling Updates What’s new in Rust 1.47
: By default, build dependencies are now built with opt-level = 0 to speed up compilation times. What’s new in Rust 1.47
: A significant standard library change now allows traits like Debug , Default , and PartialEq to be implemented for arrays of any length , lifting the previous restriction of length 32 or less. What’s new in Rust 1.47