I'm new to the Arduino and do not quite understand the F() macro yet.

In my code, I have a String, and as I want to transfer it via WebServer, I need to write it to the answer.

Somehow I need to convert the String, to fit it into the fastrprintln() function.

String weather_json = getWeatherData();
char weather[2048];
weather_json.toCharArray(weather,2048);
client.fastrprintln(F(weather));

Do you have any idea for me?