Method update_switch_state

src/raw_stream.rs:536–542

(
        &self,
        switch_vals: &mut AttributeSet<SwitchCode>,
    )

    /// [`get_switch_state`](Self::get_switch_state) instead.
    #[inline]
    pub fn update_switch_state(
        &self,
        switch_vals: &mut AttributeSet<SwitchCode>,
    ) -> io::Result<()> {
        unsafe { sys::eviocgsw(self.as_raw_fd(), switch_vals.as_mut_raw_slice())? };
        Ok(())
    }

    /// Fetch the current kernel LED state directly into the provided buffer.
    /// If you don't already have a buffer, you probably want