cudf::detail::span_base< T, Extent, Derived > Class Template Reference

C++20 std::span with reduced feature set. More...

#include <span.hpp>

Inheritance diagram for cudf::detail::span_base< T, Extent, Derived >:

Public Types
using	element_type = T
	The type of the elements in the span.
using	value_type = std::remove_cv< T >
	Stored value type.
using	size_type = std::size_t
	The type used for the size of the span.
using	difference_type = std::ptrdiff_t
	std::ptrdiff_t
using	pointer = T *
	The type of the pointer returned by data()
using	iterator = T *
	The type of the iterator returned by begin()
using	const_pointer = T const *
	The type of the pointer returned by data() const.
using	reference = T &
	The type of the reference returned by operator[](size_type)
using	const_reference = T const &
	The type of the reference returned by operator[](size_type) const.

Public Member Functions
constexpr CUDF_HOST_DEVICE	span_base (pointer data, size_type size)
	Constructs a span from a pointer and a size. More...
constexpr CUDF_HOST_DEVICE	span_base (span_base const &) noexcept=default
	Copy constructor.
constexpr CUDF_HOST_DEVICE span_base &	operator= (span_base const &) noexcept=default
	Copy assignment operator. More...
constexpr CUDF_HOST_DEVICE iterator	begin () const noexcept
	Returns an iterator to the first element of the span. More...
constexpr CUDF_HOST_DEVICE iterator	end () const noexcept
	Returns an iterator to the element following the last element of the span. More...
constexpr CUDF_HOST_DEVICE pointer	data () const noexcept
	Returns a pointer to the beginning of the sequence. More...
constexpr CUDF_HOST_DEVICE size_type	size () const noexcept
	Returns the number of elements in the span. More...
constexpr CUDF_HOST_DEVICE size_type	size_bytes () const noexcept
	Returns the size of the sequence in bytes. More...
constexpr CUDF_HOST_DEVICE bool	empty () const noexcept
	Checks if the span is empty. More...
constexpr Derived	first (size_type count) const noexcept
	Obtains a subspan consisting of the first N elements of the sequence. More...
constexpr Derived	last (size_type count) const noexcept
	Obtains a subspan consisting of the last N elements of the sequence. More...

Static Public Attributes
static constexpr std::size_t	extent = Extent
	The extent of the span.

Protected Attributes
pointer	_data {nullptr}
	Pointer to the first element in the span.
size_type	_size {0}
	The number of elements in the span.

Detailed Description

template<typename T, std::size_t Extent, typename Derived>
class cudf::detail::span_base< T, Extent, Derived >

C++20 std::span with reduced feature set.

Definition at line 56 of file span.hpp.

Constructor & Destructor Documentation

span_base()

template<typename T , std::size_t Extent, typename Derived >

constexpr CUDF_HOST_DEVICE cudf::detail::span_base< T, Extent, Derived >::span_base ( pointer  data, size_type  size  )

inlineconstexpr

Constructs a span from a pointer and a size.

Parameters

data	Pointer to the first element in the span.
size	The number of elements in the span.

Definition at line 80 of file span.hpp.

Member Function Documentation

begin()

template<typename T , std::size_t Extent, typename Derived >

constexpr CUDF_HOST_DEVICE iterator cudf::detail::span_base< T, Extent, Derived >::begin ( ) const

inlineconstexprnoexcept

Returns an iterator to the first element of the span.

If the span is empty, the returned iterator will be equal to end().

Returns

An iterator to the first element of the span

Definition at line 97 of file span.hpp.

data()

template<typename T , std::size_t Extent, typename Derived >

constexpr CUDF_HOST_DEVICE pointer cudf::detail::span_base< T, Extent, Derived >::data ( ) const

inlineconstexprnoexcept

Returns a pointer to the beginning of the sequence.

Returns

A pointer to the first element of the span

Definition at line 111 of file span.hpp.

empty()

template<typename T , std::size_t Extent, typename Derived >

constexpr CUDF_HOST_DEVICE bool cudf::detail::span_base< T, Extent, Derived >::empty ( ) const

inlineconstexprnoexcept

Checks if the span is empty.

Returns

True if the span is empty, false otherwise

Definition at line 134 of file span.hpp.

end()

template<typename T , std::size_t Extent, typename Derived >

constexpr CUDF_HOST_DEVICE iterator cudf::detail::span_base< T, Extent, Derived >::end ( ) const

inlineconstexprnoexcept

Returns an iterator to the element following the last element of the span.

This element acts as a placeholder; attempting to access it results in undefined behavior.

Returns

An iterator to the element following the last element of the span

Definition at line 105 of file span.hpp.

first()

template<typename T , std::size_t Extent, typename Derived >

constexpr Derived cudf::detail::span_base< T, Extent, Derived >::first ( size_type  count ) const

inlineconstexprnoexcept

Obtains a subspan consisting of the first N elements of the sequence.

Parameters

count

Number of elements from the beginning of this span to put in the subspan.

Returns

A subspan of the first N elements of the sequence

Definition at line 142 of file span.hpp.

last()

template<typename T , std::size_t Extent, typename Derived >

constexpr Derived cudf::detail::span_base< T, Extent, Derived >::last ( size_type  count ) const

inlineconstexprnoexcept

Obtains a subspan consisting of the last N elements of the sequence.

Parameters

count

Number of elements from the end of this span to put in the subspan

Returns

A subspan of the last N elements of the sequence

Definition at line 153 of file span.hpp.

operator=()

template<typename T , std::size_t Extent, typename Derived >

constexpr CUDF_HOST_DEVICE span_base& cudf::detail::span_base< T, Extent, Derived >::operator= ( span_base< T, Extent, Derived > const &  )

constexprdefaultnoexcept

Copy assignment operator.

Returns

Reference to this span.

size()

template<typename T , std::size_t Extent, typename Derived >

constexpr CUDF_HOST_DEVICE size_type cudf::detail::span_base< T, Extent, Derived >::size ( ) const

inlineconstexprnoexcept

Returns the number of elements in the span.

Returns

The number of elements in the span

Definition at line 118 of file span.hpp.

size_bytes()

template<typename T , std::size_t Extent, typename Derived >

constexpr CUDF_HOST_DEVICE size_type cudf::detail::span_base< T, Extent, Derived >::size_bytes ( ) const

inlineconstexprnoexcept

Returns the size of the sequence in bytes.

Returns

The size of the sequence in bytes

Definition at line 124 of file span.hpp.

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

• span.hpp