thorin::Span< T, N > Class Template Reference

This is a thin wrapper for std::span<T, N> with the following additional features: More...

#include <thorin/util/span.h>

Inheritance diagram for thorin::Span< T, N >:

Public Types
using	Base = std::span< T, N >

Public Member Functions
Constructors
	explicit (N !=std::dynamic_extent) const expr Span(std
constexpr	Span (std::span< T, N > span) noexcept
template<Vectorlike Vec> requires (std::is_same_v<typename Vec::value_type, T>)
	explicit (N !=std::dynamic_extent) const expr Span(Vec &vec)
template<Vectorlike Vec> requires (std::is_same_v<std::add_const_t<typename Vec::value_type>, std::add_const_t<T>>)
	explicit (N !=std::dynamic_extent) const expr Span(const Vec &vec)
constexpr	Span (typename Base::pointer p)
subspan
Wrappers for std::span::subspan that return a thorin::Span.
constexpr Span< T, std::dynamic_extent >	subspan (size_t i, size_t n=std::dynamic_extent) const
constexpr Span< T, std::dynamic_extent >	rsubspan (size_t i, size_t n=std::dynamic_extent) const
rsubspan
Similar to Span::subspan but in reverse: span.rsubspan(3, 5) removes the last 3 elements and while picking 5 elements onwards from there. E.g.: If span points to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, then the result will point to 2, 3, 4, 5, 6.
template<size_t i, size_t n = std::dynamic_extent>
constexpr Span< T, n !=std::dynamic_extent ? n :(N !=std::dynamic_extent ? N - i :std::dynamic_extent)>	subspan () const
template<size_t i, size_t n = std::dynamic_extent>
constexpr Span< T, n !=std::dynamic_extent ? n :(N !=std::dynamic_extent ? N - i :std::dynamic_extent)>	rsubspan () const

Detailed Description

template<class T, size_t N = std::dynamic_extent>
class thorin::Span< T, N >

This is a thin wrapper for std::span<T, N> with the following additional features:

• Constructor with std::initializer_list (C++26 will get this ...)
• Constructor for any compatible Vectorlike argument
• rsubspan (reverse subspan)
• structured binding, if N != std::dynamic_extent:

  void f(Span<int, 3> span) {
      auto& [a, b, c] = span;
      b = 23;
      // ...
  }

Definition at line 28 of file span.h.

Member Typedef Documentation

Base

template<class T , size_t N = std::dynamic_extent>

using thorin::Span< T, N >::Base = std::span<T, N>

Definition at line 30 of file span.h.

Constructor & Destructor Documentation

Span() [1/2]

template<class T , size_t N = std::dynamic_extent>

constexpr thorin::Span< T, N >::Span ( std::span< T, N >  span )

inlineconstexprnoexcept

Definition at line 37 of file span.h.

Span() [2/2]

template<class T , size_t N = std::dynamic_extent>

constexpr thorin::Span< T, N >::Span ( typename Base::pointer  p )

inlineexplicitconstexpr

Definition at line 45 of file span.h.

Member Function Documentation

explicit() [1/3]

template<class T , size_t N = std::dynamic_extent>

template<Vectorlike Vec>
requires (std::is_same_v<std::add_const_t<typename Vec::value_type>, std::add_const_t<T>>)

thorin::Span< T, N >::explicit ( N !  = std::dynamic_extent ) const &

inline

Definition at line 43 of file span.h.

explicit() [2/3]

template<class T , size_t N = std::dynamic_extent>

thorin::Span< T, N >::explicit ( N !  = std::dynamic_extent ) const

inline

Definition at line 35 of file span.h.

explicit() [3/3]

template<class T , size_t N = std::dynamic_extent>

template<Vectorlike Vec>
requires (std::is_same_v<typename Vec::value_type, T>)

thorin::Span< T, N >::explicit ( N !  = std::dynamic_extent ) const &

inline

Definition at line 40 of file span.h.

rsubspan() [1/2]

template<class T , size_t N = std::dynamic_extent>

template<size_t i, size_t n = std::dynamic_extent>

constexpr Span< T, n !=std::dynamic_extent ? n :(N !=std::dynamic_extent ? N - i :std::dynamic_extent)> thorin::Span< T, N >::rsubspan ( ) const

inlineconstexpr

Definition at line 75 of file span.h.

rsubspan() [2/2]

template<class T , size_t N = std::dynamic_extent>

constexpr Span< T, std::dynamic_extent > thorin::Span< T, N >::rsubspan ( size_t  i, size_t  n = std::dynamic_extent  ) const

inlineconstexpr

Definition at line 57 of file span.h.

References thorin::Span< T, N >::subspan().

subspan() [1/2]

template<class T , size_t N = std::dynamic_extent>

template<size_t i, size_t n = std::dynamic_extent>

constexpr Span< T, n !=std::dynamic_extent ? n :(N !=std::dynamic_extent ? N - i :std::dynamic_extent)> thorin::Span< T, N >::subspan ( ) const

inlineconstexpr

Definition at line 69 of file span.h.

Referenced by thorin::Span< T, N >::rsubspan().

subspan() [2/2]

template<class T , size_t N = std::dynamic_extent>

constexpr Span< T, std::dynamic_extent > thorin::Span< T, N >::subspan ( size_t  i, size_t  n = std::dynamic_extent  ) const

inlineconstexpr

Definition at line 54 of file span.h.

---

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

• include/thorin/util/span.h