utils::span< T > Class Template Reference

#include <userver/utils/span.hpp>

Detailed Description

template<typename T>
class utils::span< T >

A polyfill for std::span from C++20.

Examples

samples/kafka_service/src/consume.cpp, samples/kafka_service/src/consume.hpp, samples/kafka_service/src/consumer_handler.cpp, and samples/kafka_service/unittest/kafka_test.cpp.

Definition at line 30 of file span.hpp.

Public Types
using	iterator = T *
using	value_type = std::remove_cv_t< T >

Public Member Functions
constexpr	span (T *begin, T *end) noexcept
constexpr	span (T *begin, std::size_t size) noexcept
template<typename Void = void, typename = std::enable_if_t<std::is_const_v<T> && std::is_void_v<Void>>>
constexpr	span (std::initializer_list< value_type > il)
template<typename Container >
constexpr	span (Container &&cont) noexcept
template<std::size_t Size>
constexpr	span (impl::TypeIdentity< T >(&array)[Size]) noexcept
constexpr T *	begin () const noexcept
constexpr T *	end () const noexcept
constexpr T *	data () const noexcept
constexpr std::size_t	size () const noexcept
constexpr bool	empty () const noexcept
constexpr span< T >	first (std::size_t count) const noexcept
constexpr span< T >	last (std::size_t count) const noexcept
constexpr span< T >	subspan (std::size_t offset) const noexcept
constexpr span< T >	subspan (std::size_t offset, std::size_t count) const noexcept
constexpr T &	operator[] (std::size_t index) const noexcept

Member Typedef Documentation

iterator

template<typename T >

using utils::span< T >::iterator = T*

Definition at line 32 of file span.hpp.

value_type

template<typename T >

using utils::span< T >::value_type = std::remove_cv_t<T>

Definition at line 33 of file span.hpp.

Constructor & Destructor Documentation

span() [1/6]

template<typename T >

constexpr utils::span< T >::span ( )

inlineconstexprnoexcept

Definition at line 35 of file span.hpp.

span() [2/6]

template<typename T >

constexpr utils::span< T >::span ( T *  begin, T *  end  )

inlineconstexprnoexcept

Definition at line 37 of file span.hpp.

span() [3/6]

template<typename T >

constexpr utils::span< T >::span ( T *  begin, std::size_t  size  )

inlineconstexprnoexcept

Definition at line 41 of file span.hpp.

span() [4/6]

template<typename T >

template<typename Void = void, typename = std::enable_if_t<std::is_const_v<T> && std::is_void_v<Void>>>

constexpr utils::span< T >::span ( std::initializer_list< value_type >  il )

inlineconstexpr

Definition at line 52 of file span.hpp.

span() [5/6]

template<typename T >

template<typename Container >

constexpr utils::span< T >::span ( Container &&  cont )

inlineconstexprnoexcept

Definition at line 72 of file span.hpp.

span() [6/6]

template<typename T >

template<std::size_t Size>

constexpr utils::span< T >::span ( impl::TypeIdentity< T >(&)  array[Size] )

inlineconstexprnoexcept

Definition at line 75 of file span.hpp.

Member Function Documentation

begin()

template<typename T >

constexpr T * utils::span< T >::begin ( ) const

inlineconstexprnoexcept

Definition at line 78 of file span.hpp.

data()

template<typename T >

constexpr T * utils::span< T >::data ( ) const

inlineconstexprnoexcept

Definition at line 81 of file span.hpp.

empty()

template<typename T >

constexpr bool utils::span< T >::empty ( ) const

inlineconstexprnoexcept

Definition at line 83 of file span.hpp.

end()

template<typename T >

constexpr T * utils::span< T >::end ( ) const

inlineconstexprnoexcept

Definition at line 79 of file span.hpp.

first()

template<typename T >

constexpr span< T > utils::span< T >::first ( std::size_t  count ) const

inlineconstexprnoexcept

Definition at line 85 of file span.hpp.

last()

template<typename T >

constexpr span< T > utils::span< T >::last ( std::size_t  count ) const

inlineconstexprnoexcept

Definition at line 90 of file span.hpp.

operator[]()

template<typename T >

constexpr T & utils::span< T >::operator[] ( std::size_t  index ) const

inlineconstexprnoexcept

Definition at line 108 of file span.hpp.

size()

template<typename T >

constexpr std::size_t utils::span< T >::size ( ) const

inlineconstexprnoexcept

Definition at line 82 of file span.hpp.

subspan() [1/2]

template<typename T >

constexpr span< T > utils::span< T >::subspan ( std::size_t  offset ) const

inlineconstexprnoexcept

Definition at line 95 of file span.hpp.

subspan() [2/2]

template<typename T >

constexpr span< T > utils::span< T >::subspan ( std::size_t  offset, std::size_t  count  ) const

inlineconstexprnoexcept

Definition at line 100 of file span.hpp.

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

• userver/utils/span.hpp