JSON元帅的Stringer等效项

Question

I can implement Stringer to specify how fmt.Print() will write my custom type as a string. Is there an equivalent for json marshal?

I want to store unique values in go and represent it as a slice in json. Using a slice in go isn't optimal for this. This O(n) insert seems unnecessary - a binary tree or map would be faster, specially since I'm keeping the list sorted at all times.

Answer 1

Yes, json.Marshaler and json.Unmarshaler.

Implementing MarshalJSON and UnmarshalJSON will give you what you want.