nums := []int{1,2,2,3,3,3,4}

hmap := make(map[int]int)

for i:=0; i<len(nums); i++ {

  hmap[nums[i]] = 0

}

data := make(map[string][]map[string]interface{})

​

data3["tags"] = append(data3["tags"], data1...)

data3["tags"] = append(data3["tags"], append(data1, data2...)...)

Here are the URLs for the websites offering free images:

​

1. [Unsplash](https://unsplash.com/)

2. [Pexels](https://www.pexels.com/)

3. [Pixabay](https://pixabay.com/)

4. [Burst by Shopify](https://burst.shopify.com/)

5. [StockSnap.io](https://stocksnap.io/)

6. [Reshot](https://www.reshot.com/)

7. [Kaboompics](https://kaboompics.com/)

8. [FreeImages](https://www.freeimages.com/)

9. [Life of Pix](https://www.lifeofpix.com/)

10. [Foodiesfeed](https://www.foodiesfeed.com/)