parent
374ab25585
commit
42b10e51c1
3 changed files with 4 additions and 2 deletions
|
@ -1876,6 +1876,7 @@ impl<T> VecDeque<T> {
|
|||
/// assert_eq!(buf2, [2, 3]);
|
||||
/// ```
|
||||
#[inline]
|
||||
#[must_use = "use `.truncate()` if you don't need the other half"]
|
||||
#[stable(feature = "split_off", since = "1.4.0")]
|
||||
pub fn split_off(&mut self, at: usize) -> Self {
|
||||
let len = self.len();
|
||||
|
|
|
@ -1461,6 +1461,7 @@ impl String {
|
|||
/// ```
|
||||
#[inline]
|
||||
#[stable(feature = "string_split_off", since = "1.16.0")]
|
||||
#[must_use = "use `.truncate()` if you don't need the other half"]
|
||||
pub fn split_off(&mut self, at: usize) -> String {
|
||||
assert!(self.is_char_boundary(at));
|
||||
let other = self.vec.split_off(at);
|
||||
|
|
|
@ -266,14 +266,14 @@ fn test_split_off_empty() {
|
|||
fn test_split_off_past_end() {
|
||||
let orig = "Hello, world!";
|
||||
let mut split = String::from(orig);
|
||||
split.split_off(orig.len() + 1);
|
||||
let _ = split.split_off(orig.len() + 1);
|
||||
}
|
||||
|
||||
#[test]
|
||||
#[should_panic]
|
||||
fn test_split_off_mid_char() {
|
||||
let mut orig = String::from("山");
|
||||
orig.split_off(1);
|
||||
let _ = orig.split_off(1);
|
||||
}
|
||||
|
||||
#[test]
|
||||
|
|
Loading…
Reference in a new issue