Sending to a function a reference to a sub-branch

[tawmoto]

Hi,

I am trying to send a reference to sub-branch (I don't know the exact name for this, sorry) of a json to a function. This is because I have a huge json and I don't want to split it in functions.

void func(json &j)
{
    j["branch"] = "abc";
}

int main()
{
json j2 = {{"pi", 3.141},
               {"happy", true}};

func(j2["tree"]);
}

and I expect

{
    "happy": true,
    "pi": 3.141,
    "tree": {
        "branch": "abc"
    }

Is this the proper way of doing it?
Thank you

[nlohmann]

Yes, passing a reference is the way to go.

[tawmoto]

Yes, passing a reference is the way to go.

Thank you, as I use it every day I am amazed how fantastic this library is!