C++ (Cpp) QSet::capacity Beispiele

Beispiel #1

void tst_QSet::squeeze()
{
    QSet<int> set;
    int n = set.capacity();
    QVERIFY(n == 0);

    set.reserve(1000);
    QVERIFY(set.capacity() >= 1000);

    set.squeeze();
    QVERIFY(set.capacity() < 100);

    for (int i = 0; i < 500; ++i)
        set.insert(i);
    QVERIFY(set.capacity() >= 500 && set.capacity() < 10000);

    set.reserve(50000);
    QVERIFY(set.capacity() >= 50000);

    set.squeeze();
    QVERIFY(set.capacity() < 500);

    set.remove(499);
    QVERIFY(set.capacity() < 500);

    set.insert(499);
    QVERIFY(set.capacity() >= 500);

    for (int i = 0; i < 500; ++i)
        set.remove(i);
    set.squeeze();
    QVERIFY(set.capacity() < 100);
}

Beispiel #2

void tst_QSet::capacity()
{
    QSet<int> set;
    int n = set.capacity();
    QVERIFY(n == 0);

    for (int i = 0; i < 1000; ++i) {
        set.insert(i);
        QVERIFY(set.capacity() >= set.size());
    }
}

Beispiel #3

void tst_QSet::reserve()
{
    QSet<int> set;
    int n = set.capacity();
    QVERIFY(n == 0);

    set.reserve(1000);
    QVERIFY(set.capacity() >= 1000);

    for (int i = 0; i < 500; ++i)
        set.insert(i);

    QVERIFY(set.capacity() >= 1000);

    for (int j = 0; j < 500; ++j)
        set.remove(j);

    QVERIFY(set.capacity() >= 1000);

    set.clear();
    QVERIFY(set.capacity() == 0);
}