W3School TIY Editor

package main import ("fmt") func main() { myslice1 := []int{1,2,3} myslice2 := []int{4,5,6} myslice3 := append(myslice1, myslice2...) fmt.Printf("myslice3=%v\n", myslice3) fmt.Printf("length=%d\n", len(myslice3)) fmt.Printf("capacity=%d\n", cap(myslice3)) }