Team reports getting close to compiling the standard library and the compiler with the new solver enabled everywhere. Credit: Gratisography The Rust types team has made significant progress on the next-generation trait solver, according to a June 26 blog post. Work done to stabilize the use of the next-generation trait solver in coherence checking surfaced small behavior regressions and hangs, which caused delays. But the team is close to compiling the standard library and the compiler with the new solver enabled everywhere. They expect a long tail of minor issues and behavioral differences from the existing implementation. There also are open design questions that will need to be resolved prior to stabilizing the new implementation. The goal is to use the next-generation trait solver everywhere by default. Announced in January 2023, the Rust types team deals with parts of the Rust language and compiler involving the type system including type checking, trait solving, and borrow checking. Goals include working to make the type system sound, fast, consistent, and extensible. Priorities of the types team include making the type system sound, fast, consistent, and extensible. The types team is a subteam of the language and compiler teams. The Rust types team also reports it has stabilized async-fn in traits and return-position impl Trait in traits in Rust 1.75. Improvements have been made in the way generators and async functions are represented in the type system. Designing the next-generation trait solver surfaced issues and future compatibility challenges of the type-alias implementation using the old trait solver. Work is being done to rework the design and implementation. Multiple longstanding unsound issues were fixed, the most notable being unsoundness of type checking of trait impls. This subtle issue caused the team to accept methods pertaining to the function signature. The team, meanwhile, is categorizing remaining open issues and integrating them into long planning. Related content analysis Beyond the usual suspects: 5 fresh data science tools to try today The mid-month report includes quick tips for easier Python installation, a new VS Code-like IDE just for Python and R users, and five newer data science tools you won't want to miss. By Serdar Yegulalp Jul 12, 2024 2 mins Python Programming Languages Software Development analysis Generative AI won’t fix cloud migration You’ve probably heard how generative AI will solve all cloud migration problems. It’s not that simple. Generative AI could actually make it harder and more costly. By David Linthicum Jul 12, 2024 5 mins Generative AI Artificial Intelligence Cloud Computing news HR professionals trust AI recommendations HireVue survey finds 73% of HR professionals trust AI to make candidate recommendations, while 75% of workers are opposed to AI making hiring decisions. By Paul Krill Jul 11, 2024 3 mins Technology Industry Careers how-to Safety off: Programming in Rust with `unsafe` What does it mean to write unsafe code in Rust, and what can you do (and not do) with the 'unsafe' keyword? The facts may surprise you. By Serdar Yegulalp Jul 11, 2024 8 mins Rust Programming Languages Software Development Resources Videos