programming.dev

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programming.dev is a collection of programming communities and other topics relevant to software engineers, hackers, roboticists, hardware and software enthusiasts, and more.

The site is primarily english with some communities in other languages. We are connected to many other sites using the activitypub protocol that you can view posts from in the "all" tab while the "local" tab shows posts on our site.

🔗 Site with links to all relevant programming.dev sites

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ℹ️ We have a wiki site that communities can host documents on

⚖️ All users are expected to follow our Code of Conduct and the other various documents on our legal site

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💬 We have a microblog site aimed towards programmers available at https://bytes.programming.dev

🛠️ We have a forgejo instance for hosting git repositories relating to our site and the fediverse. If you have a project that relates and follows our Code of Conduct feel free to host it there and if you have ideas for things to improve our sites feel free to create issues in the relevant repositories. To go along with the instance we also have a site for sharing small code snippets that might be too small for their own repository.

🌲 We have a discord server and a matrix space for chatting with other members of the community. These are bridged to each other (so you can interact with people using matrix from discord and vice versa.

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founded 2 years ago

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The borrow checker within · baby steps (smallcultfollowing.com)

submitted 10 months ago by armchair_progamer to c/programming_languages

0 comments fedilink

This is about Rust, but it's a great post and likely relevant to languages with Rust-style ownership. It describes four features planned for Rust to make its borrow checker more expressive and permissive:

Allow a function to return a reference in one branch of a conditional and not consider it "borrowed" in the other branch (this is supported by the new borrow checker, Polonius, which should be in stable Rust very soon).
Allow "place" lifetimes; that is, lifetimes that refer to other variables or their fields (e.g. 'foo.bar is a lifetime that, when attached to a reference, means the reference is borrowing foo.bar or some data within it).
View types and inter-procedural AKA "partial" borrows: define a function that can only borrow specific fields in a structure, so that the function can be called with a structure whose other fields (at the call-site) are mutably borrowed or moved.
Self-referential structures: structures where one field borrows another owned field (e.g. Foo { foo: String, bar: &'self.foo str }, foo is owned and bar borrows from it). Crates like self_cell and ouroboros provide this feature, but the goal is to have it in safe Rust with a cleaner syntax.

The borrow checker within (smallcultfollowing.com)

submitted 10 months ago by turbohz to c/rust

4 comments fedilink