Dune::Std Namespace Reference

Namespaces
	Imp
	Impl

Classes
struct	is_callable
	Traits class to check if function is callable. More...
struct	is_callable< F(Args...), R >
	Traits class to check if function is callable. More...
struct	MakeUniqueHelper
struct	MakeUniqueHelper< T[]>
struct	MakeUniqueHelper< T[N]>
class	to_false_type
	template mapping a type to std::false_type More...
class	to_true_type
	template mapping a type to std::true_type More...

Typedefs
template<bool value>
using	bool_constant = std::integral_constant< bool, value >
	A template alias for std::integral_constant<bool, value> More...
template<typename... T>
using	index_sequence_for = make_index_sequence< typename Dune::SizeOf< T... >{}>
	Create index_sequence from 0 to sizeof...(T)-1. More...

Functions
template<class F , class ArgTuple >
decltype(auto)	apply (F &&f, ArgTuple &&args)
	Apply function with arguments given as tuple. More...
template<typename... Args>
std::array< typename std::common_type< Args... >::type, sizeof...(Args)>	make_array (const Args &... args)
	Create and initialize an array. More...
template<typename T , typename... Args>
MakeUniqueHelper< T >::NonArrayUniquePtr	make_unique (Args &&... args)
	Implementation of std::make_unique to be introduced in C++14. More...
template<typename T >
MakeUniqueHelper< T >::UnknownBoundArrayUniquePtr	make_unique (size_t n)
	Implementation of std::make_unique to be introduced in C++14. More...
template<typename T , typename ... Args>
MakeUniqueHelper< T >::KnownBoundArrayUniquePtr	make_unique (Args &&... args)=delete
	Implementation of std::make_unique to be introduced in C++14. More...

Typedef Documentation

bool_constant

template<bool value>

using Dune::Std::bool_constant = typedef std::integral_constant<bool, value>

A template alias for std::integral_constant<bool, value>

Template Parameters

value

Boolean value to encode as std::integral_constant<bool, value>

index_sequence_for

template<typename... T>

using Dune::Std::index_sequence_for = typedef make_index_sequence<typename Dune::SizeOf<T...>{}>

Create index_sequence from 0 to sizeof...(T)-1.

This should do the same as std::index_sequence_for. But due to a bug in the sizeof... operator this may produce wrong results with clang<3.8.

As a workaround we provide our own implementation that avoids this bug even if the std:: version exists.

This implemenation can be dropped, once we require a minimum clang version that has this bug fixed (i.e. >=3.8).

Function Documentation

apply()

template<class F , class ArgTuple >

decltype(auto) Dune::Std::apply	(	F &&	f,
		ArgTuple &&	args
	)

Apply function with arguments given as tuple.

Parameters

f	A callable object
args	Tuple of arguments

This will call the function with arguments generated by unpacking the tuple.

make_array()

template<typename... Args>

std::array<typename std::common_type<Args...>::type, sizeof...(Args)> Dune::Std::make_array

(

const Args &...

args

)

Create and initialize an array.

Note

This method is a somewhat limited dune-specific version of make_array() as proposed for C++17 (see N4391, accepted May 2015). The differences are that this version should never be used with expliclitly given template arguments, or with std::reference_wrapper<...> arguments, and we do not give a diagnostic when anyone happens to do that.

make_unique() [1/3]

template<typename T , typename... Args>

MakeUniqueHelper<T>::NonArrayUniquePtr Dune::Std::make_unique ( Args &&...  args )

delete

Implementation of std::make_unique to be introduced in C++14.

Template Parameters

T	Nonarray type of object to be constructed
...Args	Parameter types for constructor of T

Parameters

args	Arguments to be passed to constructor of T

This fallback implementation using perfect forwarding as proposed by Herb Sutter in http://herbsutter.com/gotw/_102/

make_unique() [2/3]

template<typename T >

MakeUniqueHelper<T>::UnknownBoundArrayUniquePtr Dune::Std::make_unique

(

size_t

n

)

Implementation of std::make_unique to be introduced in C++14.

Template Parameters

T	Array type of unknown bound

Parameters

n	Size of array to allocate

make_unique() [3/3]

template<typename T , typename ... Args>

MakeUniqueHelper<T>::KnownBoundArrayUniquePtr Dune::Std::make_unique ( Args &&...  args )

delete

Implementation of std::make_unique to be introduced in C++14.

Template Parameters

T	Array type of known bound
Args	Dummy arguments

This is deleted, since, according to the standard this should not participate in overload resolution

Parameters

args	Dummy arguments

Template Parameters

T	Nonarray type of object to be constructed
...Args	Parameter types for constructor of T

Parameters

args	Arguments to be passed to constructor of T

This fallback implementation using perfect forwarding as proposed by Herb Sutter in http://herbsutter.com/gotw/_102/