Code for a blog post

main.go

func GenerateAllPics() {
        // Set the number of processors Go can use                                                                                                                           
        runtime.GOMAXPROCS(runtime.NumCPU())
        // Make all the channels we need                                                                                                                                     
        rows := make(chan []string)
        throttle := make(chan struct{}, 10)
        doneChan := make(chan int)
        // Start reading the CSV                                                                                                                                             
        go MustReadRowAtATime("data/training.csv", rows)
        // Populate the throttle so that the workers can start working                                                                                                        
        go Populate(throttle)
        // The goroutine that spawns workers that write images                                                                                                          
        go SpawnJobs(rows, doneChan, throttle)
        // Block the main thread                                                                                                                                             
        for _ = range doneChan {}
        fmt.Println("Done!")
}