Struct qt_core::QSequentialIterable
source · #[repr(C)]pub struct QSequentialIterable { /* private fields */ }
Expand description
The QSequentialIterable class is an iterable interface for a container in a QVariant.
C++ class: QSequentialIterable
.
The QSequentialIterable class is an iterable interface for a container in a QVariant.
This class allows several methods of accessing the elements of a container held within a QVariant. An instance of QSequentialIterable can be extracted from a QVariant if it can be converted to a QVariantList.
QList<int> intList = {7, 11, 42};
QVariant variant = QVariant::fromValue(intList); if (variant.canConvert<QVariantList>()) { QSequentialIterable iterable = variant.value<QSequentialIterable>(); // Can use foreach: foreach (const QVariant &v, iterable) { qDebug() << v; } // Can use C++11 range-for: for (const QVariant &v : iterable) { qDebug() << v; } // Can use iterators: QSequentialIterable::const_iterator it = iterable.begin(); const QSequentialIterable::const_iterator end = iterable.end(); for ( ; it != end; ++it) { qDebug() << *it; } }
The container itself is not copied before iterating over it.
Implementations§
source§impl QSequentialIterable
impl QSequentialIterable
sourcepub unsafe fn at(&self, idx: c_int) -> CppBox<QVariant>
pub unsafe fn at(&self, idx: c_int) -> CppBox<QVariant>
Returns the element at position idx in the container.
Calls C++ function: QVariant QSequentialIterable::at(int idx) const
.
Returns the element at position idx in the container.
sourcepub unsafe fn begin(&self) -> CppBox<ConstIterator>
pub unsafe fn begin(&self) -> CppBox<ConstIterator>
Returns a QSequentialIterable::const_iterator for the beginning of the container. This can be used in stl-style iteration.
Calls C++ function: QSequentialIterable::const_iterator QSequentialIterable::begin() const
.
Returns a QSequentialIterable::const_iterator for the beginning of the container. This can be used in stl-style iteration.
See also end().
sourcepub unsafe fn can_reverse_iterate(&self) -> bool
pub unsafe fn can_reverse_iterate(&self) -> bool
Returns whether it is possible to iterate over the container in reverse. This corresponds to the std::bidirectional_iterator_tag iterator trait of the const_iterator of the container.
Calls C++ function: bool QSequentialIterable::canReverseIterate() const
.
Returns whether it is possible to iterate over the container in reverse. This corresponds to the std::bidirectional_iterator_tag iterator trait of the const_iterator of the container.
sourcepub unsafe fn copy_from(
&self,
other: impl CastInto<Ref<QSequentialIterable>>
) -> Ref<QSequentialIterable>
pub unsafe fn copy_from( &self, other: impl CastInto<Ref<QSequentialIterable>> ) -> Ref<QSequentialIterable>
The QSequentialIterable class is an iterable interface for a container in a QVariant.
Calls C++ function: QSequentialIterable& QSequentialIterable::operator=(const QSequentialIterable& other)
.
The QSequentialIterable class is an iterable interface for a container in a QVariant.
This class allows several methods of accessing the elements of a container held within a QVariant. An instance of QSequentialIterable can be extracted from a QVariant if it can be converted to a QVariantList.
QList<int> intList = {7, 11, 42};
QVariant variant = QVariant::fromValue(intList); if (variant.canConvert<QVariantList>()) { QSequentialIterable iterable = variant.value<QSequentialIterable>(); // Can use foreach: foreach (const QVariant &v, iterable) { qDebug() << v; } // Can use C++11 range-for: for (const QVariant &v : iterable) { qDebug() << v; } // Can use iterators: QSequentialIterable::const_iterator it = iterable.begin(); const QSequentialIterable::const_iterator end = iterable.end(); for ( ; it != end; ++it) { qDebug() << *it; } }
The container itself is not copied before iterating over it.
sourcepub unsafe fn end(&self) -> CppBox<ConstIterator>
pub unsafe fn end(&self) -> CppBox<ConstIterator>
Returns a QSequentialIterable::const_iterator for the end of the container. This can be used in stl-style iteration.
Calls C++ function: QSequentialIterable::const_iterator QSequentialIterable::end() const
.
Returns a QSequentialIterable::const_iterator for the end of the container. This can be used in stl-style iteration.
See also begin().
sourcepub unsafe fn new_copy(
other: impl CastInto<Ref<QSequentialIterable>>
) -> CppBox<QSequentialIterable>
pub unsafe fn new_copy( other: impl CastInto<Ref<QSequentialIterable>> ) -> CppBox<QSequentialIterable>
The QSequentialIterable class is an iterable interface for a container in a QVariant.
Calls C++ function: [constructor] void QSequentialIterable::QSequentialIterable(const QSequentialIterable& other)
.
The QSequentialIterable class is an iterable interface for a container in a QVariant.
This class allows several methods of accessing the elements of a container held within a QVariant. An instance of QSequentialIterable can be extracted from a QVariant if it can be converted to a QVariantList.
QList<int> intList = {7, 11, 42};
QVariant variant = QVariant::fromValue(intList); if (variant.canConvert<QVariantList>()) { QSequentialIterable iterable = variant.value<QSequentialIterable>(); // Can use foreach: foreach (const QVariant &v, iterable) { qDebug() << v; } // Can use C++11 range-for: for (const QVariant &v : iterable) { qDebug() << v; } // Can use iterators: QSequentialIterable::const_iterator it = iterable.begin(); const QSequentialIterable::const_iterator end = iterable.end(); for ( ; it != end; ++it) { qDebug() << *it; } }
The container itself is not copied before iterating over it.
Trait Implementations§
source§impl Begin for QSequentialIterable
impl Begin for QSequentialIterable
source§unsafe fn begin(&self) -> CppBox<ConstIterator>
unsafe fn begin(&self) -> CppBox<ConstIterator>
Returns a QSequentialIterable::const_iterator for the beginning of the container. This can be used in stl-style iteration.
Calls C++ function: QSequentialIterable::const_iterator QSequentialIterable::begin() const
.
Returns a QSequentialIterable::const_iterator for the beginning of the container. This can be used in stl-style iteration.
See also end().
§type Output = CppBox<ConstIterator>
type Output = CppBox<ConstIterator>
source§impl CppDeletable for QSequentialIterable
impl CppDeletable for QSequentialIterable
source§unsafe fn delete(&self)
unsafe fn delete(&self)
The QSequentialIterable class is an iterable interface for a container in a QVariant.
Calls C++ function: [destructor] void QSequentialIterable::~QSequentialIterable()
.
The QSequentialIterable class is an iterable interface for a container in a QVariant.
This class allows several methods of accessing the elements of a container held within a QVariant. An instance of QSequentialIterable can be extracted from a QVariant if it can be converted to a QVariantList.
QList<int> intList = {7, 11, 42};
QVariant variant = QVariant::fromValue(intList); if (variant.canConvert<QVariantList>()) { QSequentialIterable iterable = variant.value<QSequentialIterable>(); // Can use foreach: foreach (const QVariant &v, iterable) { qDebug() << v; } // Can use C++11 range-for: for (const QVariant &v : iterable) { qDebug() << v; } // Can use iterators: QSequentialIterable::const_iterator it = iterable.begin(); const QSequentialIterable::const_iterator end = iterable.end(); for ( ; it != end; ++it) { qDebug() << *it; } }
The container itself is not copied before iterating over it.
source§impl End for QSequentialIterable
impl End for QSequentialIterable
source§unsafe fn end(&self) -> CppBox<ConstIterator>
unsafe fn end(&self) -> CppBox<ConstIterator>
Returns a QSequentialIterable::const_iterator for the end of the container. This can be used in stl-style iteration.
Calls C++ function: QSequentialIterable::const_iterator QSequentialIterable::end() const
.
Returns a QSequentialIterable::const_iterator for the end of the container. This can be used in stl-style iteration.
See also begin().