lean-ja / lean-ja/lean-by-example
coList を定義して unfold する
Open
Nobody has claimed this yet.
付録アイデア
- Dominant language
- Lean
- Stars
- 188
- Forks
- 15
- Avg merge
- 9h 8m
- Merged PRs (30d)
- 6
Description
coList を Nat → Option A であって単調減少（一度noneになったらずっとnone）なものとして定義できる
Contributor guide
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
The issue mentions no file, test, or entry point. First locate the existing examples or definitions related to coList, then read how unfolding is demonstrated there. Done means coList is defined as a monotone Nat → Option A and its unfolding behavior is shown.
Written by the indexing model from the issue text.
Assessment
- Domain
- developer-experience
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100