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.
Advertisement
Tutorials
+18k Golang : Check if directory exist and create if does not exist
+5.8k Golang : Get expvar(export variables) to work with multiplexer
+20.9k Fix "Failed to start php5-fpm.service: Unit php5-fpm.service is masked."
+15.2k Golang : Check if a string contains multiple sub-strings in []string?
+6.1k Golang : Accessing dataframe-go element by row, column and name example
+10.4k Golang : How to flush a channel before the end of program?
+16.2k Golang : Defer function inside init()
+50.2k Golang : Check if item is in slice/array
+10.8k Golang : Decompress zlib file example
+19.3k Golang : Underscore or snake_case to camel case example
+32.4k Golang : Create x509 certificate, private and public keys
+15.8k Golang : Find file size(disk usage) with filepath.Walk