QMapmap; // Add elements to the QMap map.insert("apple", 5); map.insert("banana", 3); map.insert("orange", 8); // Clear all elements from the QMap map.clear();
QMapIn this example, a QMap is created and elements are added to it as key-value pairs. The isEmpty function is called to check if the QMap is empty or not. If it is not empty, the clear function is called to remove all its elements. Package library: Qt framework.map; // Add elements to the QMap map.insert("key1", "value1"); map.insert("key2", "value2"); // Check if QMap is empty before clearing if (!map.isEmpty()) { map.clear(); }