Pop quiz

Q1. What is the closest equivalent of std::string in Qt?

1. QString
2. QByteArray
3. QStringLiteral

Q2. Which strings match the \A\d\z regular expression?

1. Strings consisting of digits
2. Strings consisting of a single digit
3. This is not a valid regular expression

Q3. Which of the following container types can you use to store a list of widgets?

1. QVector<QWidget>
2. QList<QWidget>
3. QVector<QWidget*>

Q4. Which class can you use to convert a text string containing JSON to a Qt JSON representation?

1. QJsonValue
2. QJsonObject
3. QJsonDocument