diff options
| author | Zyad Hassan | 2024-02-23 16:37:58 -0800 |
|---|---|---|
| committer | Son Ho | 2024-03-08 09:45:57 +0100 |
| commit | 5427563a8000f281ac614a2501fb9983beb44f21 (patch) | |
| tree | 55835ec19c84d06fb291cf3df456a90f88f8dc7e /backends/lean/Base/IList | |
| parent | 44248ccfe3bfb8c45e5bb434d8dfb3dfa6e6b69c (diff) | |
Fix tuple indexing for Lean backend
Diffstat (limited to 'backends/lean/Base/IList')
| -rw-r--r-- | backends/lean/Base/IList/IList.lean | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/backends/lean/Base/IList/IList.lean b/backends/lean/Base/IList/IList.lean index 51457c20..ca5ee266 100644 --- a/backends/lean/Base/IList/IList.lean +++ b/backends/lean/Base/IList/IList.lean @@ -33,7 +33,7 @@ def indexOpt (ls : List α) (i : Int) : Option α := @[simp] theorem indexOpt_zero_cons : indexOpt ((x :: tl) : List α) 0 = some x := by simp [indexOpt] @[simp] theorem indexOpt_nzero_cons (hne : i ≠ 0) : indexOpt ((x :: tl) : List α) i = indexOpt tl (i - 1) := by simp [*, indexOpt] --- Remark: if i < 0, then the result is the defaul element +-- Remark: if i < 0, then the result is the default element def index [Inhabited α] (ls : List α) (i : Int) : α := match ls with | [] => Inhabited.default |