How to compare two version number strings in golang

Question

I have two strings (they are actually version numbers and they could be any version numbers)

a := \"1.05.00.0156\"  
b := \"1.0.221.9289\"

Answer 1

Based on Jeremy Wall's answer:

  func compareVer(a, b string) (ret int) {
            as := strings.Split(a, ".")
            bs := strings.Split(b, ".")
            loopMax := len(bs)
            if len(as) > len(bs) {
                    loopMax = len(as)
            }
            for i := 0; i < loopMax; i++ { 
                    var x, y string
                    if len(as) > i {
                            x = as[i]
                    }
                    if len(bs) > i {
                            y = bs[i]
                    }
                    xi,_ := strconv.Atoi(x)
                    yi,_ := strconv.Atoi(y)
                    if xi > yi {
                            ret = -1
                    } else if xi < yi {
                            ret = 1
                    }
                    if ret != 0 {
                            break
                    }
            }       
            return 
    }

http://play.golang.org/p/AetJqvFc3B