Struct StateWriter 

pub struct StateWriter<'a> { /* private fields */ }

Handed to a sensor during observation. The only things it can do are record a number, or record why there is not one.

Implementations

impl<'a> StateWriter<'a>

pub fn new( matrix: &'a mut StateMatrix, availability: AvailabilityWriter<'a>, ) -> StateWriter<'a>

pub fn set(&mut self, row: u32, channel: ChannelId, value: f64)

Record an observation.

Out-of-range rows and columns are ignored rather than panicking: a sensor racing a CPU hotplug event should degrade to a missing cell, not take the whole mirror down.

pub fn missing(&mut self, row: u32, channel: ChannelId, why: Availability)

Record that a cell has no value, and why.

The alternative, leaving it silently NaN, loses the distinction between “this machine cannot tell you” and “nobody asked”.