Implement Iterator::size_hint method

zonyitoo · Mar 29, 2021 · 23d1dea · 23d1dea
1 parent fc07df6
commit 23d1dea
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/lib.rs b/src/lib.rs
@@ -869,6 +869,10 @@ impl<'a> Iterator for SectionIter<'a> {
     fn next(&mut self) -> Option<Self::Item> {
         self.inner.next().map(|(k, v)| (k.as_ref().map(|s| s.as_str()), v))
     }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        self.inner.size_hint()
+    }
 }
 
 impl DoubleEndedIterator for SectionIter<'_> {
@@ -888,6 +892,10 @@ impl<'a> Iterator for SectionIterMut<'a> {
     fn next(&mut self) -> Option<Self::Item> {
         self.inner.next().map(|(k, v)| (k.as_ref().map(|s| s.as_str()), v))
     }
+
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        self.inner.size_hint()
+    }
 }
 
 impl DoubleEndedIterator for SectionIterMut<'_> {