Method try_extend_from_slice

crates/common/src/boxvec.rs:238–255

Copy and appends all elements in a slice to the `BoxVec`. # Errors This method will return an error if the capacity left (see [`remaining_capacity`]) is smaller then the length of the provided slice. [`remaining_capacity`]: #method.remaining_capacity

(&mut self, other: &[T])

    ///
    /// [`remaining_capacity`]: #method.remaining_capacity
    pub fn try_extend_from_slice(&mut self, other: &[T]) -> Result<(), CapacityError>
    where
        T: Copy,
    {
        if self.remaining_capacity() < other.len() {
            return Err(CapacityError::new(()));
        }

        let self_len = self.len();
        let other_len = other.len();

        unsafe {
            let dst = self.as_mut_ptr().add(self_len);
            ptr::copy_nonoverlapping(other.as_ptr(), dst, other_len);
            self.set_len(self_len + other_len);
        }
        Ok(())
    }

    /// Create a draining iterator that removes the specified range in the vector
    /// and yields the removed items from start to end. The element range is