lean-ja / lean-ja/lean-by-example

帰納型とは何か

Open
#2,535 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Dominant language
Lean
Stars
188
Forks
15
Avg merge
9h 8m
Merged PRs (30d)
6

Description

データ型とは、以下の三つにより定まる。

  • その型の項を作る方法
  • その型からの関数を作る方法
  • 上記の二つの間の関係

そして帰納型とは、データ型のうち fold することができるものである。

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the issue body, which introduces data types and inductive types using the notion of fold. The payload names no documentation file, entry point, or acceptance criteria, so the work is not complete until the target location and expected explanatory content are clarified.

Written by the indexing model from the issue text.

Assessment

Domain
documentation
Issue type
Documentation
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.