ArduinoJSON: "null"-Wert einfügen

Einfach nullptr verwenden:

arduinojson_null_example.cpp

json["myvalue"] = nullptr;

json["myvalue"] = nullptr;

Wenn nullptr nicht verfügbar ist, das Äquivalent (char*)0 verwenden:

arduinojson_null_fallback.cpp

json["myvalue"] = (char*)0;

json["myvalue"] = (char*)0;

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