Specialize nth_back just like nth

cuviper · cuviper · commit d5c6269dadba · 2021-07-30T15:48:39.000-07:00
diff --git a/src/macros.rs b/src/macros.rs
@@ -116,5 +116,9 @@ macro_rules! double_ended_iterator_methods {
         fn next_back(&mut self) -> Option<Self::Item> {
             self.iter.next_back().map($map_elt)
         }
+
+        fn nth_back(&mut self, n: usize) -> Option<Self::Item> {
+            self.iter.nth_back(n).map($map_elt)
+        }
     };
 }

Original file line number	Diff line number	Diff line change
`@@ -116,5 +116,9 @@ macro_rules! double_ended_iterator_methods {`
`116`	`116`	`fn next_back(&mut self) -> Option<Self::Item> {`
`117`	`117`	`self.iter.next_back().map($map_elt)`
`118`	`118`	`}`
	`119`	`+`
	`120`	`+ fn nth_back(&mut self, n: usize) -> Option<Self::Item> {`
	`121`	`+ self.iter.nth_back(n).map($map_elt)`
	`122`	`+ }`
`119`	`123`	`};`
`120`	`124`	`}`