24 Containers library [containers]

24.7 Views [views]

24.7.3 Multidimensional access [views.multidim] Accessor policy [mdspan.accessor] General [mdspan.accessor.general]

An accessor policy defines types and operations by which a reference to a single object is created from an abstract data handle to a number of such objects and an index.
A range of indices is an accessible range of a given data handle and an accessor if, for each i in the range, the accessor policy's access function produces a valid reference to an object.
  • A denotes an accessor policy.
  • a denotes a value of type A or const A.
  • p denotes a value of type A​::​data_handle_type or const A​::​data_handle_type.
    [Note 1: 
    The type A​::​data_handle_type need not be dereferenceable.
    — end note]
  • n, i, and j each denote values of type size_t.