Dune::Indices Namespace Reference

Namespace with predefined compile time indices for the range [0,19]. More...

Functions
template<char... digits>
constexpr auto	operator""_ic ()
	Literal to create an index compile-time constant. More...
template<char... digits>
constexpr auto	operator""_uc ()
	Literal to create an unsigned integer compile-time constant. More...
template<char... digits>
constexpr auto	operator""_sc ()
	Literal to create a signed integer compile-time constant. More...
template<class T , T value>
constexpr auto	operator- (std::integral_constant< T, value >)
	Negation operator for integral constants. More...

Variables
constexpr index_constant< 0 >	_0 = {}
	Compile time index with value 0.
constexpr index_constant< 1 >	_1 = {}
	Compile time index with value 1.
constexpr index_constant< 2 >	_2 = {}
	Compile time index with value 2.
constexpr index_constant< 3 >	_3 = {}
	Compile time index with value 3.
constexpr index_constant< 4 >	_4 = {}
	Compile time index with value 4.
constexpr index_constant< 5 >	_5 = {}
	Compile time index with value 5.
constexpr index_constant< 6 >	_6 = {}
	Compile time index with value 6.
constexpr index_constant< 7 >	_7 = {}
	Compile time index with value 7.
constexpr index_constant< 8 >	_8 = {}
	Compile time index with value 8.
constexpr index_constant< 9 >	_9 = {}
	Compile time index with value 9.
constexpr index_constant< 10 >	_10 = {}
	Compile time index with value 10.
constexpr index_constant< 11 >	_11 = {}
	Compile time index with value 11.
constexpr index_constant< 12 >	_12 = {}
	Compile time index with value 12.
constexpr index_constant< 13 >	_13 = {}
	Compile time index with value 13.
constexpr index_constant< 14 >	_14 = {}
	Compile time index with value 14.
constexpr index_constant< 15 >	_15 = {}
	Compile time index with value 15.
constexpr index_constant< 16 >	_16 = {}
	Compile time index with value 16.
constexpr index_constant< 17 >	_17 = {}
	Compile time index with value 17.
constexpr index_constant< 18 >	_18 = {}
	Compile time index with value 18.
constexpr index_constant< 19 >	_19 = {}
	Compile time index with value 19.

Detailed Description

Namespace with predefined compile time indices for the range [0,19].

The predefined index objects in this namespace are constexpr, which allows them to be used in situations where a compile time constant is needed, e.g. for a template parameter. Apart from that, constexpr implies internal linkage, which helps to avoid ODR problems.

The constants implicitly convert to their contained value, so you can for example write

std::array<int,_10> a;
// the above line is equivalent to
std::array<int,10> b;