How can you merge two slices into one in a programming language?

In Go, to merge two slices, you can use the built-in append function. For example, if you have two slices a and b, a new slice containing elements from both is created as follows:

 a := []int{1, 2, 3}
 b := []int{4, 5, 6}
 c := append(a, b...)
 // c now contains [1 2 3 4 5 6]

Note the use of ... after b — this is the slice unpacking operator, which allows adding all elements of slice b into a.