Higher-ranked types in trait bounds
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Description
Rust already has higher-ranked lifetime parameters; how feasible would it be to introduce higher-ranked type parameters?
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading issue #1481 and its existing discussion in the Rust RFCs repository. The issue asks about the feasibility of higher-ranked type parameters, but it names no implementation entry point, tests, or concrete acceptance criteria; done would require an agreed design and RFC scope.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100