Golang - Spinner

spinner.go

package main

import (
	"fmt"
	"time"
)

func main() {

	// Make a channel for the spinner
	c := make(chan int)

	// Stop the spinner after a certain period of time
	go func() {
		time.Sleep(3000 * time.Millisecond)
		c <- 1
	}()

	// Show the spinner
	loading(`|/-\`, c)
}

func loading(spinner string, c <-chan int) {
	// Loop forever
	for {
		// Loop through frame string
		for _, char := range spinner {
			select {
			// If loading is done, exit loop
			case <-c:
				fmt.Printf(" \r")
				return
			// If still loading, show one letter from string
			default:
				fmt.Printf("%s\r", string(char))
				time.Sleep(100 * time.Millisecond)
			}
		}
	}
}