lean-ja / lean-ja/lean-by-example
`mk_iff` 属性
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属性
- Dominant language
- Lean
- Stars
- 188
- Forks
- 15
- Avg merge
- 9h 8m
- Merged PRs (30d)
- 6
Description
@[mk_iff]
structure Nice (n : Nat) : Prop :=
(large : 100 ≤ n)
#print nice_iff
/-
theorem nice_iff : ∀ (n : ℕ), Nice n ↔ 100 ≤ n :=
fun n ↦ { mp := fun a ↦ Nice.casesOn a fun large ↦ large, mpr := fun a ↦ { large := a } }
-/
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 target file, test, or requested change is identified in the issue. Start by checking the repository’s existing example structure and reading the linked Zulip discussion; completion should be defined before work begins, such as adding or revising an example explaining the mk_iff attribute.
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
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100