Getting Qt types to work

[pylvain]

following #2216
I try to make Qt types work with the lib
I did this :

using qtjson = nlohmann::basic_json<QMap,QList,QString>;

It compiles
but this doesn't

qtjson j;

The compiler yells at me things like

json.hpp:16302: error: wrong number of template arguments (4, should be 2)
json.hpp:16978: error: wrong number of template arguments (4, should be 2)
json.hpp:17027: error: ‘const union nlohmann::basic_json<QMap, QList, QString>::json_value’ has no member named ‘object’

I'm a bit lost, do I have do implement functions ? Maybe did i forget to specify a type somewhere ?
Thanks in advance !

[pylvain]

I made that to convert between Qt Types and standard types https://gist.github.com/pylvain/d8127d4a3da206fcd49dd05463a4cc07, should anyone need it.
The lib takes 400ms to parse a 4MB json file. Converting between QJsonType and json::value_type and then doing the reverse operation takes 800ms. It's not awful, i will use that, that's good enough for me.

Just out of curiosity, has anyone any idea on how to improve performances ?
(I will close after that)