QPlaceRatings Class

The QPlaceRatings class holds rating information about a place. 更多...

头：	#include <QPlaceRatings>
qmake:	QT += location

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特性

• average : qreal
• count : int
• maximum : qreal

公共函数

	QPlaceRatings ()
	QPlaceRatings (const QPlaceRatings & other )
	~QPlaceRatings ()
qreal	average () const
int	count () const
bool	isEmpty () const
qreal	maximum () const
void	setAverage (qreal average )
void	setCount (int count )
void	setMaximum (qreal max )
QPlaceRatings &	operator= (const QPlaceRatings & other )

相关非成员

bool	operator!= (const QPlaceRatings & lhs , const QPlaceRatings & rhs )
bool	operator== (const QPlaceRatings & lhs , const QPlaceRatings & rhs )

详细描述

Rating information is used to describe how good a place is conceived to be. Typically this information is visualized as a number of stars. The average () function returns an aggregated ratings value out of a possible maximum as given by the maximum () 函数。

qDebug() << QString("This place rated ") + place.ratings().average()
            + "out of " + place.ratings().maximum() + "stars";
					

特性文档编制

average : qreal

This property holds the average value of individual ratings.

访问函数：

qreal	average () const
void	setAverage (qreal average )

count : int

This property holds the total number of individual ratings.

访问函数：

int	count () const
void	setCount (int count )

maximum : qreal

This property holds the maximum possible rating value.

访问函数：

qreal	maximum () const
void	setMaximum (qreal max )

成员函数文档编制

QPlaceRatings:: QPlaceRatings ()

Constructs a new ratings object.

[noexcept] QPlaceRatings:: QPlaceRatings (const QPlaceRatings & other )

构造副本为 other .

[noexcept] QPlaceRatings:: ~QPlaceRatings ()

Destroys the ratings object.

bool QPlaceRatings:: isEmpty () const

Returns true if all fields of the place ratings are 0; otherwise returns false.

[noexcept] QPlaceRatings &QPlaceRatings:: operator= (const QPlaceRatings & other )

赋值 other to this ratings object and returns a reference to this ratings object.

相关非成员

[noexcept] bool operator!= (const QPlaceRatings & lhs , const QPlaceRatings & rhs )

返回 true 若 lhs 不等于 rhs ，否则返回 false。

[noexcept] bool operator== (const QPlaceRatings & lhs , const QPlaceRatings & rhs )

返回 true 若 lhs 等于 rhs ，否则返回 false。

内容

• 特性

• 公共函数

• 相关非成员

• 详细描述