add doc

2024-03-15 18:06:33 +01:00
parent fa4ae5672d
commit ee6741232f
1 changed files with 4 additions and 0 deletions
@@ -7,6 +7,10 @@ import Lean.Meta.Tactic.Intro

 `let_intros` is a weaker form of `intros` aimed to only introduce `let` statements,
 but not for example `∀`-binders.
+
+Note: Mathlib has a tactic `extract_lets` which does essentially exactly this.
+  The only difference is that `let_intros` is unhygenic, in the sense that it will name
+  the introduced variables `f` instead of leaving them inaccessible `f✝`.
 -/

 namespace GameServer