diff options
| -rw-r--r-- | library/core/src/str/mod.rs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/library/core/src/str/mod.rs b/library/core/src/str/mod.rs index fbc0fc397a5..c0167388713 100644 --- a/library/core/src/str/mod.rs +++ b/library/core/src/str/mod.rs @@ -902,6 +902,12 @@ impl str { /// /// assert_eq!(None, iter.next()); /// ``` + /// + /// If the string is empty or all whitespace, the iterator yields no string slices: + /// ``` + /// assert_eq!("".split_whitespace().next(), None); + /// assert_eq!(" ".split_whitespace().next(), None); + /// ``` #[must_use = "this returns the split string as an iterator, \ without modifying the original"] #[stable(feature = "split_whitespace", since = "1.1.0")] @@ -946,6 +952,12 @@ impl str { /// /// assert_eq!(None, iter.next()); /// ``` + /// + /// If the string is empty or all ASCII whitespace, the iterator yields no string slices: + /// ``` + /// assert_eq!("".split_ascii_whitespace().next(), None); + /// assert_eq!(" ".split_ascii_whitespace().next(), None); + /// ``` #[must_use = "this returns the split string as an iterator, \ without modifying the original"] #[stable(feature = "split_ascii_whitespace", since = "1.34.0")] |