This seems like a stupid question, but I can't for the life work out how to do it.

I have a buffer like;

```rust
let result_buff: &[u8]

```

and I have some code like

```
let anded_value: uint8x16_t = unsafe { vandq_u8(sa1, sa2) };

```

I just want to copy this result from the vector register to `result_buff[x..16]`, probably via an intrinsic?

basically it's 16 bytes long and I need to work out the syntax to copy it to a particular position in the `[u8]` / `Vec<u8>`.