From 43b5f818576af98f432328f9a57bbfa375346e48 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 1 May 2022 13:02:31 +0100
Subject: [PATCH] ToReculculate: Slightly improve docs and formatting of with

This was a bit confusing at first.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 src/hidden.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/hidden.rs b/src/hidden.rs
index d47a41c9..3509975d 100644
--- a/src/hidden.rs
+++ b/src/hidden.rs
@@ -842,8 +842,9 @@ mod recompute {
   }
 
   impl ToRecalculate {
-    pub fn with<R, F: FnOnce(Self) -> (R, Implemented)>
-      (f: F) -> (R, UnpreparedUpdates)
+    /// F returning `Implemented` proves that it called `implement`
+    pub fn with<R, F>(f: F) -> (R, UnpreparedUpdates)
+    where F: FnOnce(Self) -> (R, Implemented)
     {
       let to_recalculate = ToRecalculate { outdated: default() };
       let (r, Implemented(uu)) = f(to_recalculate);
-- 
2.30.2