From e9707bc96d7bb0ddd887b207e0edf87a6c11af09 Mon Sep 17 00:00:00 2001
From: Kinto <kinto.behr@gmail.com>
Date: Wed, 1 May 2024 17:58:58 +1000
Subject: [PATCH] Implement `FlattenOk::rfold`

---
 src/flatten_ok.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/flatten_ok.rs b/src/flatten_ok.rs
index dc30e00ce..03f8f4ef8 100644
--- a/src/flatten_ok.rs
+++ b/src/flatten_ok.rs
@@ -141,6 +141,17 @@ where
             }
         }
     }
+
+    fn rfold<B, F>(self, init: B, mut f: F) -> B
+    where
+        Self: Sized,
+        F: FnMut(B, Self::Item) -> B,
+    {
+        self.iter.rfold(init, |acc, x| match x {
+            Ok(it) => it.into_iter().rfold(acc, |a, o| f(a, Ok(o))),
+            Err(e) => f(acc, Err(e)),
+        })
+    }
 }
 
 impl<I, T, E> Clone for FlattenOk<I, T, E>