Trait SpecExtendFromWithin

Source

trait SpecExtendFromWithin {
    // Required methods
    unsafe fn spec_extend_from_within(&mut self, src: Range<usize>);
    unsafe fn spec_prepend_from_within(&mut self, src: Range<usize>);
}

Expand description

Associated functions have the following preconditions:

src needs to be a valid range: src.start <= src.end <= self.len().
The buffer must have enough spare capacity: self.capacity() - self.len() >= src.len().