How Can I Dump Both Properties and Methods of a Go Struct?

Dumping Methods of Structs in Golang

While Golang's "fmt" package provides a "Printf" method to dump a struct's properties, there's a need to retrieve both properties and methods of a struct. Consider the following example:

type Foo struct {
    Prop string
}
func (f Foo)Bar() string {
    return f.Prop
}

To check the existence of the "Bar()" method in an initialized instance of type "Foo," consider using the "reflect" package. This is how you would do it:

fooType := reflect.TypeOf(&Foo{})
for i := 0; i < fooType.NumMethod(); i++ {
    method := fooType.Method(i)
    fmt.Println(method.Name)
}

If your goal is to determine if a type implements a specific method set, interfaces and type assertions might be more convenient. An example:

func implementsBar(v interface{}) bool {
    type Barer interface {
        Bar() string
    }
    _, ok := v.(Barer)
    return ok
}

To test an instance of "Foo" for the "Bar()" method:

fmt.Println("Foo implements the Bar method:", implementsBar(Foo{}))

Alternatively, to explicitly assert that a type has certain methods at compile time:

var _ Barer = Foo{}

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