Feature gate: #![feature(vec_extend_from_within)]
This is a tracking issue for Vec::vec_extend_from_within, which allows copying elements from a range to the end:
#![feature(vec_extend_from_within)] let mut vec = vec![0, 1, 2, 3, 4]; vec.extend_from_within(2..); assert_eq!(vec, [0, 1, 2, 3, 4, 2, 3, 4]); vec.extend_from_within(..2); assert_eq!(vec, [0, 1, 2, 3, 4, 2, 3, 4, 0, 1]); vec.extend_from_within(4..8); assert_eq!(vec, [0, 1, 2, 3, 4, 2, 3, 4, 0, 1, 4, 2, 3, 4]);Public API
impl<T: Clone, A: Allocator> Vec<T, A> {
pub fn extend_from_within<R>(&mut self, src: R)
where
R: RangeBounds<usize>;
} Steps / History
Vec::extend_from_within method under vec_extend_from_within feature gate #79015RetroSearch is an open source project built by @garambo | Open a GitHub Issue
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