Golang : Append and add item in slice

Problem :

You need to append/add new element into a existing slice. How to do that?

Solution :

Use the builtin function append(). For example :

 package main

 import (
  "fmt"
 )

 var a = make([]int, 8)

 func AddElement(slice []int) []int {
  newSlice := append(slice, 8) //<--- here!

  return newSlice

 }

 func main() {

  for i := 0; i < 8; i++ {
 a[i] = i
  }

  fmt.Println("Before :", a)

  newa := AddElement(a)

  fmt.Println("After :", newa)

 }

Output :

Before : [0 1 2 3 4 5 6 7]

After : [0 1 2 3 4 5 6 7 8]