| package main | |
| import ( | |
| "regexp" | |
| "strings" | |
| ) | |
| var isStrutilInitialized bool | |
| var spacesRe *regexp.Regexp | |
| func maybeInitStrutil() { | |
| if isStrutilInitialized { | |
| return | |
| } | |
| var err error | |
| spacesRe, err = regexp.Compile(`\s+`) | |
| if err != nil { | |
| panic(err) | |
| } | |
| isStrutilInitialized = true | |
| } | |
| func splitSpaces(s string) []string { | |
| maybeInitStrutil() | |
| s = strings.TrimSpace(s) | |
| if s == "" { | |
| return []string{} | |
| } | |
| return spacesRe.Split(s, -1) | |
| } |