import "fmt"

type Rank int 

const (
        Rank001 Rank = iota
        Rank002
        Rank003
        Rank004
)

var rewards = [...]string{
        "獎勵1","獎勵2","獎勵3","獎勵4",
}
        

func (r Rank) getReward() string {
        return rewards[r]
}

func main() {
        
        fmt.Println(Rank003.getReward())
}
 

通過這樣的方式，靈活的將排名與獎勵對應，並且“面向物件”，將排名，這個int型別宣告為排名，併為其新增成員函式。常規方式在C/C++，Java中，就直接通過2個以維陣列驚醒處理，但相對而言，go語言這種方式，真的很贊！

go time/time.go 中：

   108	type Weekday int
   109	
   110	const (
   111		Sunday Weekday = iota
   112		Monday
   113		Tuesday
   114		Wednesday
   115		Thursday
   116		Friday
   117		Saturday
   118
 
	)
   119	
   120	var days = [...]string{
   121		"Sunday",
   122		"Monday",
   123		"Tuesday",
   124		"Wednesday",
   125		"Thursday",
   126		"Friday",
   127		"Saturday",
   128	}
   129	
   130	// String returns the English name of the day ("Sunday", "Monday", ...).
   131	func (d Weekday) String() string
 
 { return days[d] }