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| ** This file is part of the documentation of the Qt Toolkit. |
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| ** Alternatively, you may use this file under the terms of the BSD license |
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| ****************************************************************************/ |
| |
| //! [0] |
| QVector<int> integerVector; |
| QVector<QString> stringVector; |
| //! [0] |
| |
| |
| //! [1] |
| QVector<QString> vector(200); |
| //! [1] |
| |
| |
| //! [2] |
| QVector<QString> vector(200, "Pass"); |
| //! [2] |
| |
| |
| //! [3] |
| if (vector[0] == "Liz") |
| vector[0] = "Elizabeth"; |
| //! [3] |
| |
| |
| //! [4] |
| for (int i = 0; i < vector.size(); ++i) { |
| if (vector.at(i) == "Alfonso") |
| cout << "Found Alfonso at position " << i << endl; |
| } |
| //! [4] |
| |
| |
| //! [5] |
| int i = vector.indexOf("Harumi"); |
| if (i != -1) |
| cout << "First occurrence of Harumi is at position " << i << endl; |
| //! [5] |
| |
| |
| //! [6] |
| QVector<int> vector(10); |
| int *data = vector.data(); |
| for (int i = 0; i < 10; ++i) |
| data[i] = 2 * i; |
| //! [6] |
| |
| |
| //! [7] |
| QVector<QString> vector(0); |
| vector.append("one"); |
| vector.append("two"); |
| vector.append("three"); |
| // vector: ["one", "two", "three"] |
| //! [7] |
| |
| |
| //! [8] |
| QVector<QString> vector; |
| vector.prepend("one"); |
| vector.prepend("two"); |
| vector.prepend("three"); |
| // vector: ["three", "two", "one"] |
| //! [8] |
| |
| |
| //! [9] |
| QVector<QString> vector; |
| vector << "alpha" << "beta" << "delta"; |
| vector.insert(2, "gamma"); |
| // vector: ["alpha", "beta", "gamma", "delta"] |
| //! [9] |
| |
| |
| //! [10] |
| QVector<double> vector; |
| vector << 2.718 << 1.442 << 0.4342; |
| vector.insert(1, 3, 9.9); |
| // vector: [2.718, 9.9, 9.9, 9.9, 1.442, 0.4342] |
| //! [10] |
| |
| |
| //! [11] |
| QVector<QString> vector(3); |
| vector.fill("Yes"); |
| // vector: ["Yes", "Yes", "Yes"] |
| |
| vector.fill("oh", 5); |
| // vector: ["oh", "oh", "oh", "oh", "oh"] |
| //! [11] |
| |
| |
| //! [12] |
| QVector<QString> vector; |
| vector << "A" << "B" << "C" << "B" << "A"; |
| vector.indexOf("B"); // returns 1 |
| vector.indexOf("B", 1); // returns 1 |
| vector.indexOf("B", 2); // returns 3 |
| vector.indexOf("X"); // returns -1 |
| //! [12] |
| |
| |
| //! [13] |
| QList<QString> vector; |
| vector << "A" << "B" << "C" << "B" << "A"; |
| vector.lastIndexOf("B"); // returns 3 |
| vector.lastIndexOf("B", 3); // returns 3 |
| vector.lastIndexOf("B", 2); // returns 1 |
| vector.lastIndexOf("X"); // returns -1 |
| //! [13] |
| |
| |
| //! [14] |
| QVector<double> vect; |
| vect << "red" << "green" << "blue" << "black"; |
| |
| QList<double> list = vect.toList(); |
| // list: ["red", "green", "blue", "black"] |
| //! [14] |
| |
| |
| //! [15] |
| QStringList list; |
| list << "Sven" << "Kim" << "Ola"; |
| |
| QVector<QString> vect = QVector<QString>::fromList(list); |
| // vect: ["Sven", "Kim", "Ola"] |
| //! [15] |
| |
| |
| //! [16] |
| std::vector<double> stdvector; |
| vector.push_back(1.2); |
| vector.push_back(0.5); |
| vector.push_back(3.14); |
| |
| QVector<double> vector = QVector<double>::fromStdVector(stdvector); |
| //! [16] |
| |
| |
| //! [17] |
| QVector<double> vector; |
| vector << 1.2 << 0.5 << 3.14; |
| |
| std::vector<double> stdvector = vector.toStdVector(); |
| //! [17] |