Difference between []int and [...]int

Getting Help
1 
a:=[]int{10, 20}
fmt.Println(a)

and

a:=[...]int{10, 20}
fmt.Println(a)

Both work and give the same output

Is there any difference between them?

2

Yes. [] creates a growable slice while [...] will create a fixed size array.

3

I’m new to Go, could you please clarify with an example…

4

I’m also new. But in the second case, you can’t just add a new element to the array

a=append(a,11)
fmt.Println(a)
5

Read below about slices and fixed size arrays.