diff options
| -rw-r--r-- | library/core/src/iter/traits/iterator.rs | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/library/core/src/iter/traits/iterator.rs b/library/core/src/iter/traits/iterator.rs index 6e9b48cb794..53d353802b9 100644 --- a/library/core/src/iter/traits/iterator.rs +++ b/library/core/src/iter/traits/iterator.rs @@ -1495,12 +1495,16 @@ pub trait Iterator { /// assert_eq!(merged, "alphabetagamma"); /// ``` /// - /// Flattening also works on other types like Option and Result: + /// Flattening works on any `IntoIterator` type, including `Option` and `Result`: /// /// ``` - /// let values = vec![Some(123), Some(321), None, Some(231)]; - /// let flattened_values: Vec<_> = values.into_iter().flatten().collect(); - /// assert_eq!(flattened_values, vec![123, 321, 231]); + /// let options = vec![Some(123), Some(321), None, Some(231)]; + /// let flattened_options: Vec<_> = options.into_iter().flatten().collect(); + /// assert_eq!(flattened_options, vec![123, 321, 231]); + /// + /// let results = vec![Ok(123), Ok(321), Err(456), Ok(231)]; + /// let flattened_results: Vec<_> = results.into_iter().flatten().collect(); + /// assert_eq!(flattened_results, vec![123, 321, 231]); /// ``` /// /// You can also rewrite this in terms of [`flat_map()`], which is preferable |