lean-ja / lean-ja/lean-by-example
置換の実装
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付録アイデア
- Dominant language
- Lean
- Stars
- 188
- Forks
- 15
- Avg merge
- 9h 8m
- Merged PRs (30d)
- 6
Description
「Vector α n 上の順序の置換」を実装する。
便利なこともあるんじゃないかなぁ…
- まず最初に Fin n 上の置換全体 AutFin n を実装する
- AutFin n の要素を作るための構文を用意する
- AutFin n に全順序を入れる
- それを、Vector A n 上の要素の置換に持ち上げる関数を作る
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 names no files or tests. Start by locating the existing definitions or examples for Fin n and Vector α n, then work through the four listed milestones: AutFin n, its construction syntax, a total order, and lifting the permutation to Vector α n. Done means all four requested pieces are implemented and their behavior is checked.
Written by the indexing model from the issue text.
Assessment
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100