在 go 中实现一个接口，需要自己找到并实现 interface 下面所有的函数，在代码量非常多的项目中，这么做非常不方便，为什么不像其他语言那样，用一个 impl 关键字将实现一个接口的所有函数聚合到一处 。就像下面的例子：
To implement an interface in go, you need to find and implement all the functions of the interface. In a project with a lot of code, this is very inconvenient. Why not use an impl keyword to generate all the functions of an interface together.Like the example below：
type (
Interface interface {
Len() int
Less(i, j int) bool
Swap(i, j int)
}
CountDownAction struct {
Action int `json:"action"`
}
)
var CountDownList []CountDownAction
CountDownList impl Interface{
func (receiver CountDownList) Len() int {
return len(receiver)
}
func (receiver CountDownList) Less(i, j int) bool {
return receiver[i].Action <= receiver[j].Action
}
func (receiver CountDownList) Swap(i, j int) {
receiver[i], receiver[j] = receiver[j], receiver[i]
}
}
这样，IDE 就可以为我们省下不少的工作
In this way, the IDE can save a lot of work for us.
