use core::fmt;
use core::future::Future;
use core::hash::{Hash, Hasher};
-use core::iter::FusedIterator;
+use core::iter::{Iterator, FromIterator, FusedIterator};
use core::marker::{Unpin, Unsize};
use core::mem;
use core::pin::Pin;
use core::ptr::{self, NonNull, Unique};
use core::task::{LocalWaker, Poll};
+use vec::Vec;
use raw_vec::RawVec;
use str::from_boxed_utf8_unchecked;
#[unstable(feature = "dispatch_from_dyn", issue = "0")]
impl<T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<Box<U>> for Box<T> {}
+#[unstable(feature = "boxed_slice_from_iter", issue = "0")]
+impl<A> FromIterator<A> for Box<[A]> {
+ fn from_iter<T: IntoIterator<Item = A>>(iter: T) -> Self {
+ iter.into_iter().collect::<Vec<_>>().into_boxed_slice()
+ }
+}
+
#[stable(feature = "box_slice_clone", since = "1.3.0")]
impl<T: Clone> Clone for Box<[T]> {
fn clone(&self) -> Self {
let boxed: Box<str> = Box::from(s);
assert_eq!(&*boxed, s)
}
+
+#[test]
+fn boxed_slice_from_iter() {
+ let iter = 0..100;
+ let boxed: Box<[u32]> = iter.collect();
+ assert_eq!(boxed.len(), 100);
+ assert_eq!(boxed[7], 7);
+}