JStreamAvailable< T > Class Template Reference

Test availability of stream operators. More...

#include <JStreamAvailable.hh>

Static Public Attributes
static const bool	has_istream = std::is_same<std::istream&, decltype(is<T>(0))>::value
	true if std::istream& operator>>(std::istream&, T&) is defined; else false More...
static const bool	has_ostream = std::is_same<std::ostream&, decltype(os<T>(0))>::value
	true if std::ostream& operator<<(std::ostream&, const T&) is defined; else false More...

Static Private Member Functions
template<class U >
static auto	is (U *) -> decltype(std::declval< std::istream & >() >> std::declval< U & >())
template<class U >
static auto	os (U *) -> decltype(std::declval< std::ostream & >()<< std::declval< const U & >())
template<typename >
static auto	is (...) -> std::false_type
template<typename >
static auto	os (...) -> std::false_type

Detailed Description

template<class T>
class JStreamAvailable< T >

Test availability of stream operators.

Author

mdejong

Definition at line 19 of file JStreamAvailable.hh.

Member Function Documentation

template<class T >

template<class U >

static auto JStreamAvailable< T >::is ( U *  ) -> decltype(std::declval< std::istream & >() >> std::declval< U & >())

staticprivate

template<class T >

template<class U >

static auto JStreamAvailable< T >::os ( U *  ) -> decltype(std::declval< std::ostream & >()<< std::declval< const U & >())

staticprivate

template<class T >

template<typename >

static auto JStreamAvailable< T >::is (   ... ) -> std::false_type

staticprivate

template<class T >

template<typename >

static auto JStreamAvailable< T >::os (   ... ) -> std::false_type

staticprivate

Member Data Documentation

template<class T >

const bool JStreamAvailable< T >::has_istream = std::is_same<std::istream&, decltype(is<T>(0))>::value

static

true if std::istream& operator>>(std::istream&, T&) is defined; else false

Definition at line 28 of file JStreamAvailable.hh.

template<class T >

const bool JStreamAvailable< T >::has_ostream = std::is_same<std::ostream&, decltype(os<T>(0))>::value

static

true if std::ostream& operator<<(std::ostream&, const T&) is defined; else false

Definition at line 29 of file JStreamAvailable.hh.

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

• JStreamAvailable.hh