boost::geometry::index::equal_to

operator()(Value const &, Value const &)

The function object comparing Values.

Description

It compares Geometries using geometry::equals() function. Other types are compared using operator==. The default version handles Values which are Indexables. This template is also specialized for std::pair<T1, T2> and boost::tuple<...>.

Header

#include <boost/geometry/index/equal_to.hpp>

Synopsis

template<typename Value>
struct equal_to
{
  // ...
};

Template parameter(s)

Parameter	Description
`Value`	The type of objects which are compared by this function object.

Typedef(s)

Type	Description
`result_type`	The type of result returned by function object.

Member(s)

Modifier	Function	Description
`const`	`operator()(Value const &, Value const &)`	Compare values. If Value is a Geometry geometry::equals() function is used.

operator()(Value const &, Value const &)

Compare values. If Value is a Geometry geometry::equals() function is used.

Synopsis

bool operator()(Value const & l, Value const & r)

Modifier(s)

const

Parameter(s)

Type	Name	Description
`Value const &`	`l`	First value.
`Value const &`	`r`	Second value.

Returns

true if values are equal.