lean-ja / lean-ja/lean-by-example
ToStream 型クラスがあれば fold できる？
Open
Nobody has claimed this yet.
型クラス
要調査
- Dominant language
- Lean
- Stars
- 188
- Forks
- 15
- Avg merge
- 9h 8m
- Merged PRs (30d)
- 6
Description
List に変換できるんだから、当然 fold もできそう。
（コレクションからの）find関数とかは、ToStream のインスタンスであれば定義できる気がする。
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
No file, test, or entry point is named. First determine where ToStream and collection operations are documented or demonstrated in this repository, then clarify whether fold and find should be added and what supported instances and expected behavior would be. Done requires an agreed scope and corresponding examples or tests.
Written by the indexing model from the issue text.
Assessment
- Domain
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100