如何确定Golang接口的方法集？

Question

How would one print the method set of the following interface?

type Searcher interface {
    Search(query string) (found bool, err error)
    ListSearches() []string
    ClearSearches() (err error)
}

Such that

Search
ListSearches
ClearSearches

is printed out? (Without knowledge of a concrete type which implements it).

Answer 1

Using reflection:

t := reflect.TypeOf(new(Searcher)).Elem()
fmt.Println(t)

for i := 0; i < t.NumMethod(); i++ {
    fmt.Println(t.Method(i).Name)
}

Prints:

main.Searcher
ClearSearches
ListSearches
Search