Qt::has_qt_compare_three_way Struct
template <typename T, typename> struct Qt::has_qt_compare_three_way一个用于检查类型是否支持compareThreeWay() 的类型特征。更多内容...
| 头文件： | #include <QtCompare> |
| CMake： | find_package(Qt6 REQUIRED COMPONENTS Core) target_link_libraries(mytarget PRIVATE Qt6::Core) |
| qmake： | QT += core |
| 自： | Qt 6.12 |
详细说明
如果T 通过compareThreeWay() 支持三元比较，则该结构体是继承std::true_type 的UnaryTypeTrait；否则，则继承std::false_type 。
使用Qt::if_has_qt_compare_three_way 对该属性的函数模板进行约束。
另请参阅 Qt::if_has_qt_compare_three_way 和Qt::compareThreeWay()。
© 2026 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.
