How do I pass a rapidjson::Value& to a function?

Question

rapidjson::Document doc;
//parse doc
const rapidjson::Value& object = doc["Object"];
checkSomething(object);

checkSomething(const rapidjson::Value& object) const
{
//do something with it
}

I am trying to pass a part of the JSON document to a function.

How do I correctly pass an object like this?

It works perfectly fine when I try it like this:

rapidjson::Document doc;
//parse doc
checkSomething(doc["Object"]);

checkSomething(const rapidjson::Value& object) const
{
//do something with it
}

How do I have to reference the object for it to work?

Did you mean to add `const` to the type of `object` in first definition of `checkSomething`? As it stands your two snippets are equivalent — Caleth, Apr 30 '20 at 13:17

score 1 · Answer 1 · answered Apr 30 '20 at 13:15

1

You have a reference to a const rapidjson::Value, you can't drop the const.

Either change the function to take const rapidjson::Value &, or change object to not be a const reference rapidjson::Value& object = doc["Object"];

answered Apr 30 '20 at 13:15

Caleth

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How do I pass a rapidjson::Value& to a function?

1 Answers1