diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/gleam/string.gleam | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/src/gleam/string.gleam b/src/gleam/string.gleam index 89cdc6c..bc13758 100644 --- a/src/gleam/string.gleam +++ b/src/gleam/string.gleam @@ -763,26 +763,26 @@ pub fn first(s: String) -> Result(String, Nil) { } } -/// Returns the last element in a grapheme and wraps it in an `Option(String)`. -/// If the `String` is empty, it returns `None`. Otherwise, it returns -/// `Some(String)`. +/// Returns the last grapheme cluster in a given `String` and wraps it in a +/// `Result(String, Nil)`. If the `String` is empty, it returns `Error(Nil)`. +/// Otherwise, it returns `Ok(String)`. /// /// ## Examples /// /// ```gleam /// > last("") -/// None +/// Error(Nil) /// ``` /// /// ```gleam /// > last("icecream") -/// Some("m") +/// Ok("m") /// ``` /// -pub fn last(s: String) -> Option(String) { - case length(s) { - 0 -> None - _ -> Some(slice(s, -1, 1)) +pub fn last(s: String) -> Result(String, Nil) { + case pop_grapheme(s) { + Ok(#(_, rest)) -> Ok(slice(rest, -1, 1)) + Error(e) -> Error(e) } } |