Detailed Description

\typealias QMetaAssociation::Iterable::RandomAccessIterator Exposes an iterator using std::random_access_iterator_tag.

\typealias QMetaAssociation::Iterable::BidirectionalIterator Exposes an iterator using std::bidirectional_iterator_tag.

\typealias QMetaAssociation::Iterable::ForwardIterator Exposes an iterator using std::forward_iterator_tag.

\typealias QMetaAssociation::Iterable::InputIterator Exposes an iterator using std::input_iterator_tag.

\typealias QMetaAssociation::Iterable::RandomAccessConstIterator Exposes a const_iterator using std::random_access_iterator_tag.

\typealias QMetaAssociation::Iterable::BidirectionalConstIterator Exposes a const_iterator using std::bidirectional_iterator_tag.

\typealias QMetaAssociation::Iterable::ForwardConstIterator Exposes a const_iterator using std::forward_iterator_tag.

\typealias QMetaAssociation::Iterable::InputConstIterator Exposes a const_iterator using std::input_iterator_tag.

\inherits QConstIterator

Since: 6.11 \inmodule QtCore

QMetaAssociation::Iterable::ConstIterator allows iteration over a container in a QVariant.

A QMetaAssociation::Iterable::ConstIterator can only be created by a QMetaAssociation::Iterable instance, and can be used in a way similar to other stl-style iterators.

        QHash<int, QString> mapping;
        mapping.insert(7, "Seven");
        mapping.insert(11, "Eleven");
        mapping.insert(42, "Forty-two");
 
        QVariant variant = QVariant::fromValue(mapping);
        if (variant.canConvert<QVariantHash>()) {
            QMetaAssociation::Iterable iterable = variant.value<QMetaAssociation::Iterable>();
            // Can use C++11 range-for over the values:
            for (const QVariant &v : iterable) {
                qDebug() << v;
            }
            // Can use iterators:
            QMetaAssociation::Iterable::const_iterator it = iterable.begin();
            const QMetaAssociation::Iterable::const_iterator end = iterable.end();
            for ( ; it != end; ++it) {
                qDebug() << *it; // The current value
                qDebug() << it.key();
                qDebug() << it.value();
            }
        }

See also: QMetaAssociation::Iterable

The documentation for this class was generated from the following file:

qtbase/src/corelib/kernel/qmetaassociation.cpp (bd04c5d7a4b907b8c4a2d2dda4ba3f24f687fb7f)