Getting the latest sensor data

package main

import (
    "fmt"
    "time"
    "sync"
)

func get_sensor_data(s *SensorData) {
    time.Sleep(1 * time.Second)
    s.Store(2.1)
    s.Store(2.2)
    s.Store(2.3)
}

type SensorData struct{
    mu sync.RWMutex
    last float64
}
func (d *SensorData) Store(data float64) {
    d.mu.Lock()
    defer d.mu.Unlock()

    d.last = data
}
func (d *SensorData) Get() float64 {
    d.mu.RLock()
    defer d.mu.RUnlock()

    return d.last
}

func main() {
    s := SensorData{}
    go get_sensor_data(&s)

    for {
        fmt.Println(s.last)
        time.Sleep(250 * time.Millisecond)  // Do heavy "work"
    }
}