remove size_hint from difference

without caching some information or reducing over the values of both msets its impossible to provide a size hint better than the default (0, None)
lonnen · Nov 10, 2020 · 9e69175 · 9e69175
1 parent 0c7ef7d
commit 9e69175
Showing 1 changed file with 0 additions and 5 deletions.
diff --git a/src/lib.rs b/src/lib.rs
@@ -1389,11 +1389,6 @@ impl<'a, T: Eq + Hash, S: BuildHasher> Iterator for Difference<'a, T, S> {
             self.remaining = count.saturating_sub(other_count);
         }
     }
-
-    fn size_hint(&self) -> (usize, Option<usize>) {
-        let (_, upper) = self.iter.size_hint();
-        (0, upper)
-    }
 }
 
 impl<T: Eq + Hash + Clone, S: BuildHasher> FusedIterator for Difference<'_, T, S> {}