How to merge two slices in Golang

In this tutorial, you’ll learn how you can concatenate two slices of the same type in Go.

Go language provides a built-in function append() to combine two or more slices of the same type.

append() function accepts two or more arguments, it returns a new slice

newSlice := append([]int{1,2,3}, 4, 5)
// []int{1,2,3,4,5}

To merge two slices, we use the … operator as a postfix to the second slice

Solution

package main

import "fmt"

func main() {
    slice1 := []int{1, 2, 3}
    slice2 := []int{4, 5, 6, 7}

    slice3 := append(slice1, slice2...)

    fmt.Println(slice3)
}

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