| // +build OMIT | |
| package main | |
| import "fmt" | |
| func main() { | |
| var a []int | |
| printSlice("a", a) | |
| // append works on nil slices. | |
| a = append(a, 0) | |
| printSlice("a", a) | |
| // the slice grows as needed. | |
| a = append(a, 1) | |
| printSlice("a", a) | |
| // we can add more than one element at a time. | |
| a = append(a, 2, 3, 4) | |
| printSlice("a", a) | |
| } | |
| func printSlice(s string, x []int) { | |
| fmt.Printf("%s len=%d cap=%d %v\n", | |
| s, len(x), cap(x), x) | |
| } |