Golang : Display advertisement images or strings on random order



Tags : golang advertisement shuffle random

This is a Golang add on for my previous tutorial on how to display random advertisements with PHP by shuffling technique. If you are looking to display different content, images or strings each time a page load or refresh with Golang, use this example :

 package main

 import (
 "fmt"
 "math/rand"
 "time"
 )

 func shuffle(src []string) []string {
 final := make([]string, len(src))
 rand.Seed(time.Now().UTC().UnixNano())
 perm := rand.Perm(len(src))

 for i, v := range perm {
 final[v] = src[i]
 }
 return final
 }

 func main() {

 ads := []string{
 "<a href=\"http://www.edu.joshuatly.com\"><img src=\"https://www.hometuitionjob.com/public/images/ads/edujoshuatly250x250.gif\"></a>",
 "<a href=\"http://www.guru-app.com\"><img src=\"https://www.hometuitionjob.com/public/images/ads/guru-app250x250.jpg\"></a>",
 }

 toDisplay := shuffle(ads)

 // we only want to display 1st item, therefore use toDisplay[0]

 fmt.Printf("Advertisement HTML code : \n %v\n", toDisplay[0])

 }

Sample output :

Sweets-Mac-Pro:~ sweetlogic$ go run shuffleads.go

Advertisement HTML code :

<a href="http://www.guru-app.com"> <img src="https://www.hometuitionjob.com/public/images/ads/guru-app250x250.jpg"> </a>

Sweets-Mac-Pro:~ sweetlogic$ go run shuffleads.go

Advertisement HTML code :

<a href="http://www.edu.joshuatly.com"> <img src="https://www.hometuitionjob.com/public/images/ads/edujoshuatly250x250.gif"> </a>

Sweets-Mac-Pro:~ sweetlogic$ go run shuffleads.go

Advertisement HTML code :

<a href="http://www.edu.joshuatly.com"> <img src="https://www.hometuitionjob.com/public/images/ads/edujoshuatly250x250.gif"> </a>

Sweets-Mac-Pro:~ sweetlogic$ go run shuffleads.go

Advertisement HTML code :

<a href="http://www.edu.joshuatly.com"> <img src="https://www.hometuitionjob.com/public/images/ads/edujoshuatly250x250.gif"> </a>

Sweets-Mac-Pro:~ sweetlogic$ go run shuffleads.go

Advertisement HTML code :

<a href="http://www.guru-app.com"> <img src="https://www.hometuitionjob.com/public/images/ads/guru-app250x250.jpg"> </a>

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  See also : PHP : Shuffle to display different content or advertisement



Tags : golang advertisement shuffle random

By Adam Ng

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