How to handle non-existent json.RawMessage in GO?

Question

go

In general, the problem:
The site may or may not return a value.
When I try to get non-existent values, the panic starts.
var settingList []*Setting
settingList[0].online
settingList[0].status...
For example, online can be passed, but status is not.
In php I do it like this:
isset($result[0]['setting']['online']) ? $result[0]['setting']['online'] : 'not specified';

Answer 1

if len(settingList) == 0 {
    // данных нет
    return
}
for _, item := range settingList {
    if item.Online == "" {
        item.Online = "не указано"
    }
}

Answer 2

settingList[0].online
settingList[0].status...
If the fields of the structure are not exportable, and this piece of code says that they are, then all the fields of the structure will have empty values.
Index out of range means that settingList is empty.

Answer 3

if settingList[0].online != nil {...}