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prepend

alloc::collections::vec_deque::spec_extend

Function prepend 

Source 
unsafe fn prepend<T, A: Allocator>(deque: &mut VecDeque<T, A>, slice: &[T])
Expand description

Prepends elements of slice to deque using a copy.

§Safety

  • deque must have space for slice.len() new elements.
  • Elements of slice will be copied into the deque, make sure to forget the elements if T is not Copy.