4
我有一个程序,许多功能在不同的结构中是相似的,但是,我最终一次又一次地写这些函数,尤其是因为正在处理的变量是不同的结构。使代码更通用
我在这里写了一个示例代码。
package main
import "fmt"
func (a *Match) Add(v Match) {
a.Runs += v.Runs
a.Points += v.Points
}
type Match struct {
Runs uint64
Points uint64
}
func (a *Activity) Add(v Activity) {
a.Walk += v.Walk
a.Jog += v.Jog
}
type Activity struct {
Walk uint64
Jog uint64
}
func GetDailyMatches() map[string]Match {
var dailyMatches map[string]Match
Match1, Match2 := Match{5, 10}, Match{1, 2}
dailyMatches = make(map[string]Match)
dailyMatches["01"] = Match1
dailyMatches["02"] = Match2
dailyMatches["03"] = Match1
dailyMatches["04"] = Match2
return dailyMatches
}
func GetDailyActivities() map[string]Activity {
var dailyActivities map[string]Activity
Activity1, Activity2 := Activity{5, 10}, Activity{1, 2}
dailyActivities = make(map[string]Activity)
dailyActivities["01"] = Activity1
dailyActivities["02"] = Activity2
dailyActivities["03"] = Activity1
dailyActivities["04"] = Activity2
return dailyActivities
}
func main() {
fmt.Println(CalculateMatchSummary("01", "03"))
fmt.Println(CalculateActivitySummary("02", "04"))
fmt.Println(CalculateMatchSummary("01", "03"))
fmt.Println(CalculateActivitySummary("02", "04"))
}
func CalculateMatchSummary(start, end string) (total Match) {
dailyMatches := GetDailyMatches()
for day, value := range dailyMatches {
if day < start {
continue
} else if day > end {
continue
} else {
total.Add(value)
}
}
return
}
func CalculateActivitySummary(start, end string) (total Activity) {
dailyActivities := GetDailyActivities()
for day, value := range dailyActivities {
if day < start {
continue
} else if day > end {
continue
} else {
total.Add(value)
}
}
return
}
如果您发现,无论是Match
和Activity
具有相同的功能和相同的结构,不同之处在于内部,它们是不同的结构。
有没有一种简单的方法可以让Golang本身的代码变得更为通用(Go的泛型,Go不在这里)。
你可以只是把方法中的if块.. – ergonaut
@ergonaut'total'类型是不同的。它会继续工作吗? – Sundar
我想不是。 https://golang.org/doc/faq#generics – ergonaut