dash::is_range< RangeType > Struct Template Reference

Definition of type trait dash::is_range<T> with static member value indicating whether type T is a model of the Range concept. More...

#include <Range.h>

Detailed Description

template<class RangeType>
struct dash::is_range< RangeType >

Definition of type trait dash::is_range<T> with static member value indicating whether type T is a model of the Range concept.

Implemented as test if dash::begin<T> and dash::end<T> are defined.

In the current implementation, range types must specify the return type of dash::begin<T> and dash::end<T> as type definition iterator.

This requirement will become obsolete in the near future.

Example:

bool g_array_is_range = dash::is_range<
                                 dash::Array<int>
                              >::value;
// -> true

bool l_array_is_range = dash::is_range<
                                 typename dash::Array<int>::local_type
                              >::value;
// -> true

struct inf_range { 
  typedef int           * iterator;
  typedef std::nullptr_t  sentinel;

  iterator begin() { ... }
  sentinel end()   { ... }
};

bool inf_range_is_range = dash::is_range<inf_range>::value;
// -> false
//    because of missing definition
//      iterator dash::end<inf_range> -> iterator

Currently requires specialization as workaround:
template <>
struct is_range<inf_range> : std::integral_value<bool, true> { };

Definition at line 243 of file Range.h.

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

• /tmp/tmporruphar/dash/include/dash/Range.h