Allow slicing to fixed-length arrays
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Description
I think it would be nice to do something like that:
let x = [1, 2, 3, 4];
let y = x[1..2];
Why isn't y of type [i32; 2] now?
I wanted to convert a [f32; 16] to an [[f32; 4]; 4], however there seems to be no easy way to do that.
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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 with issue #1833 and the Rust RFC process; investigate how slicing and fixed-size array types are specified. Compare the requested [f32; 16] to [[f32; 4]; 4] conversion and define the intended behavior and constraints. Done means a settled design suitable for an RFC.
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Assessment
- Tech stack
- rust
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100