Optimize Iterator::nth for the Enum* iterators

gentoo90 · Feb 25, 2020 · c9a653b · c9a653b
1 parent c5a6559
commit c9a653b
Showing 1 changed file with 10 additions and 0 deletions.
diff --git a/src/lib.rs b/src/lib.rs
@@ -1031,6 +1031,11 @@ impl<'key> Iterator for EnumKeys<'key> {
             e @ None => e,
         }
     }
+
+    fn nth(&mut self, n: usize) -> Option<Self::Item> {
+        self.index += n as DWORD;
+        self.next()
+    }
 }
 
 /// Iterator over values
@@ -1051,6 +1056,11 @@ impl<'key> Iterator for EnumValues<'key> {
             e @ None => e,
         }
     }
+
+    fn nth(&mut self, n: usize) -> Option<Self::Item> {
+        self.index += n as DWORD;
+        self.next()
+    }
 }
 
 fn to_utf16<P: AsRef<OsStr>>(s: P) -> Vec<u16> {