DGtal::detail::HasNestedTypeType< IC > Struct Template Reference

#include <DGtal/base/IteratorCirculatorTraits.h>

Public Types
typedef char	yes[1]
typedef char	no[2]

Public Member Functions
	BOOST_STATIC_CONSTANT (bool, value=sizeof(test< IC >(0))==sizeof(yes))

Static Public Member Functions
template<typename C >
static yes &	test (typename C::Type *)
template<typename C >
static no &	test (...)

Detailed Description

template<typename IC>
struct DGtal::detail::HasNestedTypeType< IC >

Aim: Checks whether type IC has a nested type called 'Type' or not. NB: from en.wikipedia.org/wiki/Substitution_failure_is_not_an_error NB: to avoid various compiler issues, we use BOOST_STATIC_CONSTANT according to http://www.boost.org/development/int_const_guidelines.html.

Description of template class 'HasNestedTypeType'

Template Parameters

IC	any iterator or circulator

Definition at line 76 of file IteratorCirculatorTraits.h.

Member Typedef Documentation

no

template<typename IC >

typedef char DGtal::detail::HasNestedTypeType< IC >::no[2]

Definition at line 79 of file IteratorCirculatorTraits.h.

yes

template<typename IC >

typedef char DGtal::detail::HasNestedTypeType< IC >::yes[1]

Definition at line 78 of file IteratorCirculatorTraits.h.

Member Function Documentation

BOOST_STATIC_CONSTANT()

template<typename IC >

DGtal::detail::HasNestedTypeType< IC >::BOOST_STATIC_CONSTANT	(	bool	,
		value	= sizeof(test< IC >(0))==sizeof(yes)
	)

test() [1/2]

template<typename IC >

template<typename C >

static yes& DGtal::detail::HasNestedTypeType< IC >::test ( typename C::Type *  )

static

test() [2/2]

template<typename IC >

template<typename C >

static no& DGtal::detail::HasNestedTypeType< IC >::test (   ... )

static

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The documentation for this struct was generated from the following file:

• IteratorCirculatorTraits.h