| // +build ignore,OMIT | |
| package main | |
| import "fmt" | |
| const digits = "0123456789abcdef" | |
| func itoa(x, base int) string { | |
| // START OMIT | |
| t := x | |
| switch { | |
| case x == 0: | |
| return "0" | |
| case x < 0: | |
| t = -x | |
| } | |
| var s [32]byte | |
| i := len(s) | |
| for t != 0 { // Look, ma, no ()'s! | |
| i-- | |
| s[i] = digits[t%base] | |
| t /= base | |
| } | |
| if x < 0 { | |
| i-- | |
| s[i] = '-' | |
| } | |
| return string(s[i:]) | |
| // STOP OMIT | |
| } | |
| func main() { | |
| fmt.Println(itoa(-42, 2)) | |
| } |