Since Go puts a heavy emphasis on interfaces, I'm wondering how can I explicitly state that a structure is implementing an interface for clarity and errors checking in case some method is missing? I have seen two approaches so far, and I'm wondering which is correct and in accordance to Go specification.
Method 1 - anonymous field
type Foo interface{
Foo()
}
type Bar struct {
Foo
}
func (b *Bar)Foo() {
}
Method 2 - Explicit conversion
type Foo interface{
Foo()
}
type Bar struct {
}
func (b *Bar)Foo() {
}
var _ Foo = (*Bar)(nil)
Are those methods correct, or is there some other way to do something like this?