std::default_accessor
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C++
Feature test macros (C++20)
Concepts library (C++20)
Metaprogramming library (C++11)
Ranges library (C++20)
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Containers library
(C++17)
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(C++26)
(C++26)
(C++11)
(C++11)
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(C++11)
(C++11)
(C++23)
(C++23)
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Tables
std::mdspan
(C++26)
(C++26)
(C++26)
default_accessor
(C++26)
(C++26)
(C++26)
(C++26)
(C++26)
(C++26)
Defined in header
<mdspan>
template< class ElementType >
class default_accessor;
(since C++23)
class default_accessor;
A specialization of std::default_accessor class template is the default AccessorPolicy used by std::mdspan if no user-specified accessor policy is provided.
Each specialization of default_accessor models semiregular and is TriviallyCopyable.
Contents
[edit] Template parameters
ElementType
-
the element type. Shall be a complete object type that is neither an abstract class type nor an array type. Otherwise, the program is ill-formed
[edit] Member types
Member type
Definition
offset_policy
default_accessor
element_type
ElementType
reference
ElementType&
data_handle_type
ElementType*
[edit] Member functions
(constructor)
default_accessor (public member function)
access
(public member function)
offset
(public member function)
std::default_accessor::default_accessor
constexpr default_accessor() noexcept = default;
(1)
template< class OtherElementType >
constexpr default_accessor( default_accessor<OtherElementType> ) noexcept {}
(2)
constexpr default_accessor( default_accessor<OtherElementType> ) noexcept {}
1) Default constructs a
default_accessor.2) Constructs a
default_accessor from default_accessor<OtherElementType>. The constructor has no visible effect. This overload participates in overload resolution only if std::is_convertible_v <OtherElementType(*)[], element_type(*)[]> is true.
std::default_accessor::access
constexpr reference access( data_handle_type p, std::size_t i ) const noexcept;
Equivalent to return p[i];.
std::default_accessor::offset
constexpr data_handle_type offset( data_handle_type p, std::size_t i ) const noexcept;
Equivalent to return p + i;.
[edit] Example
This section is incomplete
Reason: no example
Reason: no example