From 5c4535d1e4c851a4601087562775b9865fa083df Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 11 Oct 2020 10:54:15 +0100
Subject: [PATCH] implement .iter( )

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 zcoord/zcoord.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/zcoord/zcoord.rs b/zcoord/zcoord.rs
index 84b0c06f..472059eb 100644
--- a/zcoord/zcoord.rs
+++ b/zcoord/zcoord.rs
@@ -340,6 +340,12 @@ impl ExactSizeIterator for IteratorCore<AddSubRangeDelta> {
   fn len(&self) -> usize { return usize::MAX }
 }
 
+impl Mutable {
+  pub fn iter<ASO:AddSubOffset>(self, aso: ASO) -> IteratorCore<ASO> {
+    IteratorCore { current: self, aso }
+  }
+}
+
 //---------- main features of a Zcoord ----------
 
 impl ZCoord {
-- 
2.30.2