QMetaSequence::Iterable::ConstIterator Class
class QMetaSequence::Iterable::ConstIteratorQMetaSequence::Iterable::ConstIterator 允许在QVariant 中对容器进行迭代。更多内容...
该类在 Qt 6.11 中引入。
公共函数
| QVariant | operator*() const |
| int | operator->() const |
| QVariant | operator[](qsizetype n) const |
详细说明
QMetaSequence::Iterable::ConstIterator 只能由QMetaSequence::Iterable 实例创建，其使用方式与其他 STL 风格的迭代器类似。
QList<int>intList={7, 11, 42};
QVariant variant=QVariant::fromValue(intList);
if(variant.canConvert<QVariantList>()) {
QMetaSequence::Iterable iterable=variant.value<QMetaSequence::Iterable>();
// 可使用 C++11 范围 for 循环：
for(constQVariant&v: iterable) {
qDebug() << v;
}
// 可以使用迭代器：
QMetaSequence::Iterable::const_iteratorit=iterable.begin();
constQMetaSequence::Iterable::const_iteratorend=iterable.end();
for( ; it!=end;++it) {
qDebug() << *it;
}
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