const_iterator Struct

 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>()) {
     QAssociativeIterable iterable = variant.value<QAssociativeIterable>();
     // Can use foreach over the values:
     foreach (const QVariant &v, iterable) {
         qDebug() << v;
     }
     // Can use C++11 range-for over the values:
     for (const QVariant &v : iterable) {
         qDebug() << v;
     }
     // Can use iterators:
     QAssociativeIterable::const_iterator it = iterable.begin();
     const QAssociativeIterable::const_iterator end = iterable.end();
     for ( ; it != end; ++it) {
         qDebug() << *it; // The current value
         qDebug() << it.key();
         qDebug() << it.value();
     }
 }

Member Function Documentation

const_iterator::const_iterator(const const_iterator &other)

Creates a copy of other.

const_iterator &const_iterator::operator=(const const_iterator &other)

Assigns other to this.

const_iterator::~const_iterator()

Destroys the QAssociativeIterable::const_iterator.

const QVariant const_iterator::key() const

Returns the current key, converted to a QVariant.

const QVariant const_iterator::value() const

Returns the current value, converted to a QVariant.

bool const_iterator::operator!=(const const_iterator &other) const

Returns true if other points to a different item than this iterator; otherwise returns false.

See also operator==().

const QVariant const_iterator::operator*() const

Returns the current value, converted to a QVariant.

const_iterator const_iterator::operator+(int j) const

Returns an iterator to the item at j positions forward from this iterator.

See also operator-() and operator+=().

const_iterator &const_iterator::operator++()

The prefix ++ operator (++it) advances the iterator to the next item in the container and returns an iterator to the new current item.

Calling this function on QAssociativeIterable::end() leads to undefined results.

See also operator--().

const_iterator const_iterator::operator++(int)

This is an overloaded function.

The postfix ++ operator (it++) advances the iterator to the next item in the container and returns an iterator to the previously current item.

const_iterator &const_iterator::operator+=(int j)

Advances the iterator by j items.

See also operator-=() and operator+().

const_iterator const_iterator::operator-(int j) const

Returns an iterator to the item at j positions backward from this iterator.

See also operator+() and operator-=().

const_iterator &const_iterator::operator--()

The prefix -- operator (--it) makes the preceding item current and returns an iterator to the new current item.

Calling this function on QAssociativeIterable::begin() leads to undefined results.

See also operator++().

const_iterator const_iterator::operator--(int)

This is an overloaded function.

The postfix -- operator (it--) makes the preceding item current and returns an iterator to the previously current item.

const_iterator &const_iterator::operator-=(int j)

Makes the iterator go back by j items.

See also operator+=() and operator-().

bool const_iterator::operator==(const const_iterator &other) const

Returns true if other points to the same item as this iterator; otherwise returns false.

See also operator!=().