Chunks { v: self, chunk_size: chunk_size }
}
- /// Returns an iterator over `chunk_size` elements of the slice at a
- /// time. The chunks are slices and do not overlap. If `chunk_size` does
- /// not divide the length of the slice, then the last up to `chunk_size-1`
- /// elements will be omitted.
- ///
- /// Due to each chunk having exactly `chunk_size` elements, the compiler
- /// can often optimize the resulting code better than in the case of
- /// [`chunks`].
- ///
- /// # Panics
- ///
- /// Panics if `chunk_size` is 0.
- ///
- /// # Examples
- ///
- /// ```
- /// #![feature(exact_chunks)]
- ///
- /// let slice = ['l', 'o', 'r', 'e', 'm'];
- /// let mut iter = slice.exact_chunks(2);
- /// assert_eq!(iter.next().unwrap(), &['l', 'o']);
- /// assert_eq!(iter.next().unwrap(), &['r', 'e']);
- /// assert!(iter.next().is_none());
- /// ```
- ///
- /// [`chunks`]: #method.chunks
- #[unstable(feature = "exact_chunks", issue = "47115")]
- #[inline]
- pub fn exact_chunks(&self, chunk_size: usize) -> ExactChunks<T> {
- assert!(chunk_size != 0);
- let rem = self.len() % chunk_size;
- let len = self.len() - rem;
- ExactChunks { v: &self[..len], chunk_size: chunk_size}
- }
-
/// Returns an iterator over `chunk_size` elements of the slice at a time.
/// The chunks are mutable slices, and do not overlap. If `chunk_size` does
/// not divide the length of the slice, then the last chunk will not
ChunksMut { v: self, chunk_size: chunk_size }
}
+ /// Returns an iterator over `chunk_size` elements of the slice at a
+ /// time. The chunks are slices and do not overlap. If `chunk_size` does
+ /// not divide the length of the slice, then the last up to `chunk_size-1`
+ /// elements will be omitted.
+ ///
+ /// Due to each chunk having exactly `chunk_size` elements, the compiler
+ /// can often optimize the resulting code better than in the case of
+ /// [`chunks`].
+ ///
+ /// # Panics
+ ///
+ /// Panics if `chunk_size` is 0.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// #![feature(exact_chunks)]
+ ///
+ /// let slice = ['l', 'o', 'r', 'e', 'm'];
+ /// let mut iter = slice.exact_chunks(2);
+ /// assert_eq!(iter.next().unwrap(), &['l', 'o']);
+ /// assert_eq!(iter.next().unwrap(), &['r', 'e']);
+ /// assert!(iter.next().is_none());
+ /// ```
+ ///
+ /// [`chunks`]: #method.chunks
+ #[unstable(feature = "exact_chunks", issue = "47115")]
+ #[inline]
+ pub fn exact_chunks(&self, chunk_size: usize) -> ExactChunks<T> {
+ assert!(chunk_size != 0);
+ let rem = self.len() % chunk_size;
+ let len = self.len() - rem;
+ ExactChunks { v: &self[..len], chunk_size: chunk_size}
+ }
+
/// Returns an iterator over `chunk_size` elements of the slice at a time.
/// The chunks are mutable slices, and do not overlap. If `chunk_size` does
/// not divide the length of the slice, then the last up to `chunk_size-1`