when Unmarshal a slice field, json str is '[]' or empty, the value is always nil.

[JOHNKING123]

when Unmarshal a slice field, json str is '[]' or empty, the value is always nil. i want to distinguish ，how can i do

[neild]

Protobuf repeated fields don't have a concept of presence, so there is no distinction between a zero-length repeated field and an unset repeated field. I'm afraid there is no way for you to distinguish between these cases after unmarshaling.

[JOHNKING123]

ok.thanks. There is such the scene. if you can give other suggests, i will be thankful.

[momopluto]

ok.thanks. There is such the scene. if you can give other suggests, i will be thankful.

homelight/json This repo can help.