rust-lang / rust-lang/rust-clippy
Lint not providing size_hint
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L-perf
L-suggestion
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- Rust
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Description
Honestly, I haven't found many instances where an iterator couldn't provide a size_hint at all, even if it's a really bad one like (0, Some(len * 5)). I think it'd be nice to lint this by default and require an allow for more obscure cases, as there are so many cases where this could be added.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
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Research direction
The issue names no files, tests, or entry points. Start by locating the iterator-related lint implementation and its tests, then define which missing size_hint cases are covered and what exemptions require an allow.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100