rust-lang / rust-lang/rfcs

Make `str` a `struct str([u8])`

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A-primitive A-string T-lang
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Description

This was previously attempted in https://github.com/rust-lang/rust/pull/19612, but since https://github.com/rust-lang/rust/pull/45225 some of the issues are no longer relevant, so it may be feasible to try this again.

See also Make bool an enum.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the earlier rust-lang/rust pull request #19612 and the linked RFC issue about making bool an enum. Determine which previously identified issues are addressed by pull request #45225 and define the remaining design and implementation scope for representing str as struct str([u8]). Done requires a resolved, actionable RFC proposal rather than only a feasibility question.

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
25/100

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