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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
  • 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 cargo xtask 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
  • aliases: Alternatives to the title

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