QCollatorSortKey Class
QCollatorSortKey 类可用于加快字符串排序速度。更多内容...
| 头文件： | #include <QCollatorSortKey> |
| CMake： | find_package(Qt6 REQUIRED COMPONENTS Core) target_link_libraries(mytarget PRIVATE Qt6::Core) |
| qmake： | QT += core |
- 所有成员的列表，包括继承的成员
- QCollatorSortKey 属于“字符串数据类”和“隐式共享类”。
注意：该类中的所有函数均为可重入函数。
QCollatorSortKey 比较
| 类别 | 可比较类型 |
|---|---|
| weak | QCollatorSortKey |
公共函数
| QCollatorSortKey() | |
| QCollatorSortKey(const QCollatorSortKey &other) | |
(since 6.8) | QCollatorSortKey(QCollatorSortKey &&other) |
| ~QCollatorSortKey() | |
| int | compare(const QCollatorSortKey &otherKey) const |
| void | swap(QCollatorSortKey &other) |
| QCollatorSortKey & | operator=(QCollatorSortKey &&other) |
| QCollatorSortKey & | operator=(const QCollatorSortKey &other) |
相关的非成员
(since 6.12) bool | operator!=(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs) |
(since 6.12) bool | operator<(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs) |
(since 6.12) bool | operator<=(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs) |
(since 6.12) bool | operator==(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs) |
(since 6.12) bool | operator>(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs) |
(since 6.12) bool | operator>=(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs) |
详细说明
QCollatorSortKey 类总是由QCollator::sortKey() 创建，用于快速字符串排序，例如在对大量字符串进行排序时。
另请参阅 QCollator 、QCollator::sortKey() 和compare()。
成员函数文档
[delete] QCollatorSortKey::QCollatorSortKey()
默认构造一个QCollatorSortKey 实例。该函数已被删除。
QCollatorSortKey::QCollatorSortKey(const QCollatorSortKey &other)
创建other 排序键的副本。
[constexpr noexcept default, since 6.8] QCollatorSortKey::QCollatorSortKey(QCollatorSortKey &&other)
从 `other` 创建一个新的 `QCollatorSortKey` 对象。
注意： 被移动的对象 other 将处于部分初始化状态，在此状态下，唯一有效的操作是销毁和赋值。
该函数于 Qt 6.8 中引入。
[noexcept] QCollatorSortKey::~QCollatorSortKey()
删除排序键。
[noexcept] int QCollatorSortKey::compare(const QCollatorSortKey &otherKey) const
将该键与otherKey 进行比较，后者必须是由与该键相同的QCollator 的 sortKey() 方法生成的。比较操作将按照该QCollator 的排序规则进行。
如果该键在排序时位于otherKey 之前，则返回负值；如果两个键相等，则返回 0；如果该键在排序时位于otherKey 之后，则返回正值。
另请参阅 operator==()、operator!=()、operator<()、operator<=()、operator>() 以及operator>=()。
[noexcept] void QCollatorSortKey::swap(QCollatorSortKey &other)
将此排序键与other 互换。此操作速度极快，且绝不会失败。
[noexcept] QCollatorSortKey &QCollatorSortKey::operator=(QCollatorSortKey &&other)
将other 通过移动赋值操作赋值给此QCollatorSortKey 实例。
注意： 被移动的源对象 other 将处于一种部分构成的状态，在此状态下，唯一有效的操作是销毁和赋值。
QCollatorSortKey &QCollatorSortKey::operator=(const QCollatorSortKey &other)
将other 分配给此排序键。
相关的非成员
[noexcept, since 6.12] bool operator!=(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs)
[noexcept, since 6.12] bool operator<(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs)
[noexcept, since 6.12] bool operator<=(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs)
[noexcept, since 6.12] bool operator==(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs)
[noexcept, since 6.12] bool operator>(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs)
[noexcept, since 6.12] bool operator>=(const QCollatorSortKey &lhs, const QCollatorSortKey &rhs)
这两个键必须是由同一个QCollator 的sortKey()方法生成的。根据生成它们的QCollator ，比较lhs 和rhs 。
这些函数在 Qt 6.12 中引入。
另请参阅 QCollatorSortKey::compare()。
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