#caniuse.rs

Rust feature search

#About

This site allows you to quickly which version of Rust stabilized a certain feature, or whether it is still unstable. Head over to caniuse.rs to try it!

#Contributing

#Running the site locally

First you need to be able to run the site locally of course, to try your changes.

Pre-requisites:

• cargo
• Python 3
• wasm-pack (website has install instructions, to build from source use cargo install wasm-pack)
• rollup (npm install --global rollup if you have npm installed)

Once those are installed, just run ./x.py serve and the site will be built and served at http://localhost:8000/.

#Adding data

You may want to look at issue #16 for missing data. These fields can be specified for a feature:

• title: Short description to identify the feature. Should fit into "can i use {title}?".
• flag: The feature flag, if any – you can most often find this in the diff of the stabilization or implementation PR, for library features look for #[stable] and #[rustc_const_stable] attributes.
• rfc_id: RFC ID, if applicable – the number of the PR that added the RFC. Also the first part of the filename of the RFC after being merged.
• impl_pr_id: Implementation PR ID, if applicable – the number of the PR that added this feature. For features where is no clear single implementation PR, leave out this field.
• tracking_issue_id: Tracking issue ID, if applicable.
• stabilization_pr_id: Stabilization PR ID, if applicable.
• doc_path: Documentation path, if applicable – https://doc.rust-lang.org/{path}.
• edition_guide_path: Edition guide path, if applicable – https://doc.rust-lang.org/edition-guide/{path}
• unstable_book_path: Unstable book path, if applicable – https://doc.rust-lang.org/unstable-book/{path}
• items: Language items (functions, structs, modules) that are part of this feature – do not specify if this feature is exactly one item and that item is already used as the title