NOTE: This is a rather naïve question on purpose.
During debugging and logging in a Qt5 C++ application it is useful to print the value of internal variables, and in Qt the common way is to use qDebug() with friends like this:
qDebug()<<"The value was: "<< myVar;
// Usually works well even for built-in Qt types
This seems to work for many built-in Qt5 specific types, and even pointers as well, however in the cases where instead of outputting a log, we are in fact building a string this becomes much more cumbersome.
QString myString= "The value was: "+myVar;
// Usually doesn't work well for built-in Qt types
So the question is, what is a good general way to get the equivalent string representation of built-in Qt types as you would get from streaming them to qDebug()?
Or "what is the equivalent to Java toString() for Qt types"?
From QDebug class documentation I could find that it has constructor
QDebug::QDebug(QString *string)
Constructs a debug stream that writes to the given string
So this should work:
QString myString;
QDebug stream(&myString);
stream <<"The value was: "<< myVar;