std::default_accessor
From cppreference.com
Defined in header <mdspan>
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||
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template
<
class ElementType >
class default_accessor; |
(since C++23) | |
A specialization of std::default_accessor class template is the default AccessorPolicy used by std::mdspan
Each specialization of default_accessor models semiregular and is TriviallyCopyable
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 |
Member types
| Member type | Definition |
offset_policy
|
default_accessor
|
element_type
|
ElementType
|
reference
|
ElementType&
|
data_handle_type
|
ElementType*
|
Member functions
(constructor) |
constructs a default_accessor (public member function) |
access |
returns a nth element provided by arguments (public member function) |
offset |
returns a data handle advanced by an offset value (public member function) |
std::default_accessor::default_accessor
|
constexpr default_accessor(
)
noexcept
=
default
;
|
(1) | |
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template
<
class OtherElementType >
constexpr default_accessor( default_accessor<OtherElementType> ) noexcept { } |
(2) | |
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(
*
)
[
]
>
std::default_accessor::access
|
constexpr reference access( data_handle_type p, std::size_t i )
const
noexcept
;
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Equivalent to return p[i];.
std::default_accessor::offset
|
constexpr data_handle_type offset( data_handle_type p, std::size_t i )
const
noexcept
;
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||
Equivalent to return p + i;.
Example
| This section is incomplete Reason: no example |