Datasets:
| /- Copyright (c) Mario Carneiro, 2023. -/ | |
| import Mathlib.Init.Data.Int.Order | |
| import Mathlib.Init.Data.Nat.Lemmas | |
| macro "le_or_succ_le" a:term:arg n:num : term => | |
| `(show $a ≤ $n ∨ $(Lean.quote (n.getNat+1)) ≤ $a from le_or_lt ..) | |