Investigate size hints for formatting
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Description
There is a closed RFC on this topic with some lingering questions at the end, but one of the deficiencies of format! is that it does not have size hints (and hence cannot preallocate a String). It would be good to look into this!
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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 the closed RFC 583 and its lingering questions, then investigate how format! currently handles allocation and size information. Done means producing a resolved direction for adding size hints and addressing the RFC's open concerns; the issue names no source files or tests.
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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
- Needs clarification
- Newbie friendliness
- 25/100