tmp/tmpyp4wljne/{from.md → to.md}
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| 1 |
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##### Class template `default_accessor` <a id="mdspan.accessor.default">[[mdspan.accessor.default]]</a>
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###### Overview <a id="mdspan.accessor.default.overview">[[mdspan.accessor.default.overview]]</a>
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``` cpp
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namespace std {
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template<class ElementType>
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struct default_accessor {
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using offset_policy = default_accessor;
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using element_type = ElementType;
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using reference = ElementType&;
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using data_handle_type = ElementType*;
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constexpr default_accessor() noexcept = default;
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template<class OtherElementType>
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constexpr default_accessor(default_accessor<OtherElementType>) noexcept;
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constexpr reference access(data_handle_type p, size_t i) const noexcept;
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constexpr data_handle_type offset(data_handle_type p, size_t i) const noexcept;
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};
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}
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```
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`default_accessor` meets the accessor policy requirements.
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`ElementType` is required to be a complete object type that is neither
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an abstract class type nor an array type.
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Each specialization of `default_accessor` is a trivially copyable type
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that models `semiregular`.
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[0, n) is an accessible range for an object `p` of type
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`data_handle_type` and an object of type `default_accessor` if and only
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if \[`p`, `p + `n) is a valid range.
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###### Members <a id="mdspan.accessor.default.members">[[mdspan.accessor.default.members]]</a>
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``` cpp
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template<class OtherElementType>
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constexpr default_accessor(default_accessor<OtherElementType>) noexcept {}
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```
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*Constraints:*
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`is_convertible_v<OtherElementType(*)[], element_type(*)[]>` is `true`.
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``` cpp
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constexpr reference access(data_handle_type p, size_t i) const noexcept;
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```
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*Effects:* Equivalent to: `return p[i];`
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``` cpp
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constexpr data_handle_type offset(data_handle_type p, size_t i) const noexcept;
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```
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*Effects:* Equivalent to: `return p + i;`
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