diff options
| -rw-r--r-- | library/core/src/iter/traits/collect.rs | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/library/core/src/iter/traits/collect.rs b/library/core/src/iter/traits/collect.rs index aa91346851f..56fad602cf9 100644 --- a/library/core/src/iter/traits/collect.rs +++ b/library/core/src/iter/traits/collect.rs @@ -374,16 +374,18 @@ where /// # Examples /// ``` /// let mut tuple = (vec![0], vec![1]); - /// tuple.extend(vec![(2, 3), (4, 5), (6, 7)]); - /// assert_eq!(tuple.0, vec![0, 2, 4, 6]); - /// assert_eq!(tuple.1, vec![1, 3, 5, 7]); + /// tuple.extend([(2, 3), (4, 5), (6, 7)]); + /// assert_eq!(tuple.0, [0, 2, 4, 6]); + /// assert_eq!(tuple.1, [1, 3, 5, 7]); /// - /// // also allows for arbitrarily nested tuples - /// let mut nested_tuple = (vec![(1, -1)], vec![(2, -2)]); - /// nested_tuple.extend(vec![((3, -3), (4, -4)), ((5, -5), (6, -6))]); + /// // also allows for arbitrarily nested tuples as elements + /// let mut nested_tuple = (vec![1], (vec![2], vec![3])); + /// nested_tuple.extend([(4, (5, 6)), (7, (8, 9))]); /// - /// assert_eq!(nested_tuple.0, vec![(1, -1), (3, -3), (5, -5)]); - /// assert_eq!(nested_tuple.1, vec![(2, -2), (4, -4), (6, -6)]); + /// let (a, (b, c)) = nested_tuple; + /// assert_eq!(a, [1, 4, 7]); + /// assert_eq!(b, [2, 5, 8]); + /// assert_eq!(c, [3, 6, 9]); /// ``` fn extend<T: IntoIterator<Item = (A, B)>>(&mut self, into_iter: T) { let (a, b) = self; |