Moose::Span< T > Class Template Reference

Replacement for std::span which we only get in c++20. More...

#include <MooseTypes.h>

Public Types
using	element_type = T
using	size_type = std::size_t
using	pointer = T *
using	reference = T &

Public Member Functions
constexpr	Span (T *ptr, size_type n) noexcept
constexpr pointer	data () const noexcept
constexpr size_type	size () const noexcept
constexpr bool	empty () const noexcept
constexpr reference	operator[] (size_type i) const noexcept
constexpr pointer	begin () const noexcept
constexpr pointer	end () const noexcept

Private Attributes
T *	_ptr
size_type	_n

Detailed Description

template<typename T>
class Moose::Span< T >

Replacement for std::span which we only get in c++20.

This concept was generated in conversation with chatgpt-5. A few notes

• Denoting all methods as const is apparently the standard idiom for span views
• We mark all these methods as noexcept because they are trivial. E.g. we do no bounds checking or anything like that so there are no possibilities for throwing exceptions. By marking noexcept we are making this property known to the compiler so it can potentially perform optimizations

Definition at line 1060 of file MooseTypes.h.

Member Typedef Documentation

element_type

template<typename T >

using Moose::Span< T >::element_type = T

Definition at line 1063 of file MooseTypes.h.

pointer

template<typename T >

using Moose::Span< T >::pointer = T *

Definition at line 1065 of file MooseTypes.h.

reference

template<typename T >

using Moose::Span< T >::reference = T &

Definition at line 1066 of file MooseTypes.h.

size_type

template<typename T >

using Moose::Span< T >::size_type = std::size_t

Definition at line 1064 of file MooseTypes.h.

Constructor & Destructor Documentation

Span()

template<typename T >

constexpr Moose::Span< T >::Span ( T *  ptr, size_type  n  )

inlinenoexcept

Definition at line 1068 of file MooseTypes.h.

: _ptr(ptr), _n(n) {}

Member Function Documentation

begin()

template<typename T >

constexpr pointer Moose::Span< T >::begin ( ) const

inlinenoexcept

Definition at line 1077 of file MooseTypes.h.

{ return _ptr; }

data()

template<typename T >

constexpr pointer Moose::Span< T >::data ( ) const

inlinenoexcept

Definition at line 1071 of file MooseTypes.h.

{ return _ptr; }

empty()

template<typename T >

constexpr bool Moose::Span< T >::empty ( ) const

inlinenoexcept

Definition at line 1073 of file MooseTypes.h.

{ return _n == 0; }

end()

template<typename T >

constexpr pointer Moose::Span< T >::end ( ) const

inlinenoexcept

Definition at line 1078 of file MooseTypes.h.

{ return _ptr + _n; }

operator[]()

template<typename T >

constexpr reference Moose::Span< T >::operator[] ( size_type  i ) const

inlinenoexcept

Definition at line 1076 of file MooseTypes.h.

{ return _ptr[i]; }

size()

template<typename T >

constexpr size_type Moose::Span< T >::size ( ) const

inlinenoexcept

Definition at line 1072 of file MooseTypes.h.

{ return _n; }

Member Data Documentation

_n

template<typename T >

size_type Moose::Span< T >::_n

private

Definition at line 1082 of file MooseTypes.h.

Referenced by Moose::Span< T >::empty(), Moose::Span< T >::end(), and Moose::Span< T >::size().

_ptr

template<typename T >

T* Moose::Span< T >::_ptr

private

Definition at line 1081 of file MooseTypes.h.

Referenced by Moose::Span< T >::begin(), Moose::Span< T >::data(), Moose::Span< T >::end(), and Moose::Span< T >::operator[]().

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

• include/utils/MooseTypes.h