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]

  See also : Golang : How to get capacity of a slice or array?





By Adam Ng

IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.


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