CGAL 6.1 - Algebraic Foundations

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CGAL::Coercion_traits< A, B > Struct Template Reference
Reference Manual

`#include <CGAL/Coercion_traits.h>`

## Definition

template<typename A, typename B>
struct CGAL::Coercion_traits< A, B >

An instance of `Coercion_traits` reflects the type coercion of the types A and B, it is symmetric in the two template arguments.

See also
  `ExplicitInteroperable`
  `ImplicitInteroperable`

Examples
  Algebraic_foundations/implicit_interoperable_dispatch.cpp, and Algebraic_foundations/interoperable.cpp.

## Types
typedef unspecified_type | Are_explicit_interoperable
| Tag indicating whether the two types A and B are a model of `ExplicitInteroperable`
typedef unspecified_type | Are_implicit_interoperable
| Tag indicating whether the two types A and B are a model of `ImplicitInteroperable`
typedef unspecified_type | Type
| The coercion type of `A` and `B`.
typedef unspecified_type | Cast
| A model of the `AdaptableFunctor` concept, providing the conversion of `A` or `B` to `Type`.

## Member Typedef Documentation

## ◆ Are_explicit_interoperable

template<typename A , typename B >

typedef unspecified_type CGAL::Coercion_traits< A, B >::Are_explicit_interoperable

Tag indicating whether the two types A and B are a model of `ExplicitInteroperable`

This is either `CGAL::Tag_true` or `CGAL::Tag_false`.

## ◆ Are_implicit_interoperable

template<typename A , typename B >

typedef unspecified_type CGAL::Coercion_traits< A, B >::Are_implicit_interoperable

Tag indicating whether the two types A and B are a model of `ImplicitInteroperable`

This is either `CGAL::Tag_true` or `CGAL::Tag_false`.

## ◆ Cast

template<typename A , typename B >

typedef unspecified_type CGAL::Coercion_traits< A, B >::Cast

A model of the `AdaptableFunctor` concept, providing the conversion of `A` or `B` to `Type`.

In case A and B are not `ExplicitInteroperable` this is undefined.

## ◆ Type

template<typename A , typename B >

typedef unspecified_type CGAL::Coercion_traits< A, B >::Type

The coercion type of `A` and `B`.

In case A and B are not `ExplicitInteroperable` this is undefined.