const_iterator Class

Member Function Documentation

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

See also operator!=().

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

See also operator==().

const_iterator::const_iterator()

Constructs an uninitialized iterator.

Functions like key(), value(), and operator++() must not be called on an uninitialized iterator. Use operator=() to assign a value to it before using it.

See also QJsonObject::constBegin() and QJsonObject::constEnd().

const_iterator::const_iterator(const QJsonObject::iterator &other)

Constructs a copy of other.

QString const_iterator::key() const

Returns the current item's key.

See also value().

QJsonValueConstRef const_iterator::value() const

Returns the current item's value.

See also key() and operator*().

const QJsonValueConstRef const_iterator::operator*() const

Returns the current item's value.

Same as value().

See also key().

QJsonObject::const_iterator const_iterator::operator+(qsizetype j) const

Returns an iterator to the item at j positions forward from this iterator. If j is negative, the iterator goes backward.

This operation can be slow for large j values.

See also operator-().

QJsonObject::const_iterator &const_iterator::operator++()

The prefix ++ operator, ++i, advances the iterator to the next item in the object and returns an iterator to the new current item.

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

See also operator--().

QJsonObject::const_iterator const_iterator::operator++(int)

This is an overloaded function.

The postfix ++ operator, i++, advances the iterator to the next item in the object and returns an iterator to the previously current item.

QJsonObject::const_iterator &const_iterator::operator+=(qsizetype j)

Advances the iterator by j items. If j is negative, the iterator goes backward.

This operation can be slow for large j values.

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

QJsonObject::const_iterator const_iterator::operator-(qsizetype j) const

Returns an iterator to the item at j positions backward from this iterator. If j is negative, the iterator goes forward.

This operation can be slow for large j values.

See also operator+().

qsizetype const_iterator::operator-(QJsonObject::const_iterator other) const

Returns the number of items between the item pointed to by other and the item pointed to by this iterator.

QJsonObject::const_iterator &const_iterator::operator--()

The prefix -- operator, --i, makes the preceding item current and returns an iterator pointing to the new current item.

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

See also operator++().

QJsonObject::const_iterator const_iterator::operator--(int)

This is an overloaded function.

The postfix -- operator, i--, makes the preceding item current and returns an iterator pointing to the previously current item.

QJsonObject::const_iterator &const_iterator::operator-=(qsizetype j)

Makes the iterator go back by j items. If j is negative, the iterator goes forward.

This operation can be slow for large j values.

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

const QJsonValueConstRef *const_iterator::operator->() const

Returns a pointer to the current item.

bool const_iterator::operator<(const QJsonObject::const_iterator &other) const

Returns true if the item pointed to by this iterator is less than the item pointed to by the other iterator.

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

Returns true if the item pointed to by this iterator is less than or equal to the item pointed to by the other iterator.

bool const_iterator::operator>(const QJsonObject::const_iterator &other) const

Returns true if the item pointed to by this iterator is greater than the item pointed to by the other iterator.

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

Returns true if the item pointed to by this iterator is greater than or equal to the item pointed to by the other iterator.

QJsonValueConstRef const_iterator::operator[](qsizetype j) const

Returns the item at offset j from the item pointed to by this iterator (the item at position *this + j).

This function is provided to make QJsonObject iterators behave like C++ pointers.

See also operator+().