lean-ja / lean-ja/lean-by-example
mkNullNode を使ってコマンドの配列からマクロ生成をする
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- Dominant language
- Lean
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- 188
- Forks
- 15
- Avg merge
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- Merged PRs (30d)
- 6
Description
コマンドの配列をマクロ内で展開したいときに便利
open Lean
macro "foo" x:ident y:ident : command => do
let c ← `(def $x := 3)
let d ← `(def $y := 4)
let cs := #[c, d]
return .mk (mkNullNode cs)
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
Start by reviewing the Lean macro example in the issue and locating where similar code examples are maintained in the repository. Done should mean the mkNullNode technique for expanding a command array inside a macro is documented as a usable example, with the shown behavior preserved.
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
- Active
- Clarity
- Needs clarification
- Newbie friendliness
- 45/100