could not find to_json() method in T's namespace

[AistisT]

nlohmann::json subscriber;	
subscriber["Name"] = &callerName;
subscriber["SubscribeTopic"] = topicToSubscribe;
subscriber["CallBackTopic"] = callBackTopic;
	

and

nlohmann::json subscriber = {
   	{ "Name", &callerName },
   	{ "SubscribeTopic", &topicToSubscribe },
   	{ "CallBackTopic", &callBackTopic },
   };

Both cause the error

Vs 2017, latest release

I seem to be unable to create json object, I've read through documentation like 20 times and there is nothing else that has been mentioned about it.

[nlohmann]

The error message indicates that you try to convert a type to JSON that the library does not know. In that case, it searches for a to_json method on the type's namespace, see https://github.com/nlohmann/json#arbitrary-types-conversions.

In your case, the problem seems to be line

subscriber["Name"] = &callerName;

What is the type of &callerName?

[AistisT]

std::string pointer, I realized that I have been trying to access it by reference, that was causing the issue, cheers for pointing my attention to it!

[nlohmann]

Cool! Does it work now?

[AistisT]

It does work now, but how should I deal with Unicode characters? Is it possible to use std::wstring ? I would really like to avoid having to get another library and trying to figure how to encode strings in utf-8

[AistisT]

Nvm seems c++11 introduced easy way to encode strings to utf-8

std::string msg = u8" महसुस Aistis message €";

Feel free to close this now! 👍

[OvermindDL1]

Nvm seems c++11 introduced easy way to encode strings to utf-8

That still depends on the compiler encoding the source text properly however.

[nlohmann]

Indeed the library only supports UTF-8, though you may parse from std::wstring (in the latest develop version). But @OvermindDL1 is right - your compiler must make sure that string literals are actually encoded with UTF-8.