Shared xexpressions. More...

#include <xexpression.hpp>

Inheritance diagram for xt::xshared_expression< E >:

Public Types
using	base_class = xexpression<xshared_expression<E>>
using	value_type = typename E::value_type
using	reference = typename E::reference
using	const_reference = typename E::const_reference
using	pointer = typename E::pointer
using	const_pointer = typename E::const_pointer
using	size_type = typename E::size_type
using	difference_type = typename E::difference_type
using	inner_shape_type = typename E::inner_shape_type
using	shape_type = typename E::shape_type
using	strides_type
using	backstrides_type
using	inner_strides_type
using	inner_backstrides_type
using	storage_type
using	stepper = typename E::stepper
using	const_stepper = typename E::const_stepper
using	linear_iterator = decltype(xt::linear_begin(std::declval<E&>()))
using	const_linear_iterator = decltype(xt::linear_begin(std::declval<const E&>()))
using	reverse_linear_iterator = std::reverse_iterator<linear_iterator>
using	const_reverse_linear_iterator = std::reverse_iterator<const_linear_iterator>
using	bool_load_type = typename E::bool_load_type
Public Types inherited from xt::xexpression< xshared_expression< E > >
using	derived_type

Public Member Functions
template<class... Args>
auto	operator() (Args... args) -> decltype(std::declval< E >()(args...))
auto	shape () const -> decltype(std::declval< xtl::constify_t< E > >().shape())
auto	dimension () const -> decltype(std::declval< xtl::constify_t< E > >().dimension())
auto	size () const -> decltype(std::declval< xtl::constify_t< E > >().size())
auto	layout () const -> decltype(std::declval< xtl::constify_t< E > >().layout())
auto	is_contiguous () const -> decltype(std::declval< xtl::constify_t< E > >().is_contiguous())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	begin (const S &shape) noexcept -> decltype(std::declval< E >().template begin< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	begin () noexcept -> decltype(std::declval< E >().template begin< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	end (const S &shape) noexcept -> decltype(std::declval< E >().template end< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	end () noexcept -> decltype(std::declval< E >().template end< L >())
template<layout_type L = ::xt::layout_type::row_major>
auto	begin () const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template begin< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	begin (const S &shape) const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template begin< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	end () const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template end< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	end (const S &shape) const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template end< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	cbegin () const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template cbegin< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	cbegin (const S &shape) const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template cbegin< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	cend () const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template cend< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	cend (const S &shape) const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template cend< L >(shape))
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	rbegin (const S &shape) noexcept -> decltype(std::declval< E >().template rbegin< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	rbegin () noexcept -> decltype(std::declval< E >().template rbegin< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	rend (const S &shape) noexcept -> decltype(std::declval< E >().template rend< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	rend () noexcept -> decltype(std::declval< E >().template rend< L >())
template<layout_type L = ::xt::layout_type::row_major>
auto	rbegin () const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template rbegin< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	rbegin (const S &shape) const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template rbegin< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	rend () const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template rend< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	rend (const S &shape) const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template rend< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	crbegin () const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template crbegin< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	crbegin (const S &shape) const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template crbegin< L >(shape))
template<layout_type L = ::xt::layout_type::row_major>
auto	crend () const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template crend< L >())
template<layout_type L = ::xt::layout_type::row_major, class S>
auto	crend (const S &shape) const noexcept -> decltype(std::declval< xtl::constify_t< E > >().template crend< L >(shape))
linear_iterator	linear_begin () noexcept
linear_iterator	linear_end () noexcept
const_linear_iterator	linear_begin () const noexcept
const_linear_iterator	linear_end () const noexcept
const_linear_iterator	linear_cbegin () const noexcept
const_linear_iterator	linear_cend () const noexcept
reverse_linear_iterator	linear_rbegin () noexcept
reverse_linear_iterator	linear_rend () noexcept
const_reverse_linear_iterator	linear_rbegin () const noexcept
const_reverse_linear_iterator	linear_rend () const noexcept
const_reverse_linear_iterator	linear_crbegin () const noexcept
const_reverse_linear_iterator	linear_crend () const noexcept
template<class T = E>
std::enable_if_t< strided_expression< T >, const inner_strides_type & >	strides () const
template<class T = E>
std::enable_if_t< strided_expression< T >, const inner_strides_type & >	backstrides () const
template<class T = E>
std::enable_if_t< data_interface_expression< T >, pointer >	data () noexcept
template<class T = E>
std::enable_if_t< data_interface_expression< T >, pointer >	data () const noexcept
template<class T = E>
std::enable_if_t< data_interface_expression< T >, size_type >	data_offset () const noexcept
template<class T = E>
std::enable_if_t< data_interface_expression< T >, typename T::storage_type & >	storage () noexcept
template<class T = E>
std::enable_if_t< data_interface_expression< T >, const typename T::storage_type & >	storage () const noexcept
template<class It>
reference	element (It first, It last)
template<class It>
const_reference	element (It first, It last) const
template<class S>
bool	broadcast_shape (S &shape, bool reuse_cache=false) const
template<class S>
bool	has_linear_assign (const S &strides) const noexcept
template<class S>
auto	stepper_begin (const S &shape) noexcept -> decltype(std::declval< E >().stepper_begin(shape))
template<class S>
auto	stepper_end (const S &shape, layout_type l) noexcept -> decltype(std::declval< E >().stepper_end(shape, l))
template<class S>
auto	stepper_begin (const S &shape) const noexcept -> decltype(std::declval< const E >().stepper_begin(shape))
template<class S>
auto	stepper_end (const S &shape, layout_type l) const noexcept -> decltype(std::declval< const E >().stepper_end(shape, l))
Downcast functions
	xshared_expression (const std::shared_ptr< E > &ptr)
	Constructor for xshared expression (note: usually the free function make_xshared is recommended).
long	use_count () const noexcept
	Return the number of times this expression is referenced.
Public Member Functions inherited from xt::xexpression< xshared_expression< E > >
derived_type &	derived_cast () &noexcept
	Returns a reference to the actual derived type of the xexpression.
const derived_type &	derived_cast () const &noexcept
	Returns a constant reference to the actual derived type of the xexpression.
derived_type	derived_cast () &&noexcept
	Returns a constant reference to the actual derived type of the xexpression.

Static Public Attributes
static constexpr layout_type	static_layout = E::static_layout
static constexpr bool	contiguous_layout = static_layout != layout_type::dynamic

Additional Inherited Members
Protected Member Functions inherited from xt::xexpression< xshared_expression< E > >
	xexpression (const xexpression &)=default
xexpression &	operator= (const xexpression &)=default
	xexpression (xexpression &&)=default
xexpression &	operator= (xexpression &&)=default

Detailed Description

template<class E>
class xt::xshared_expression< E >

Shared xexpressions.

Due to C++ lifetime constraints it's sometimes necessary to create shared expressions (akin to a shared pointer).

For example, when a temporary expression needs to be used twice in another expression, shared expressions can come to the rescue:

template <class E>
auto cos_plus_sin(xexpression<E>&& expr)
{
    // THIS IS WRONG: forwarding rvalue twice not permitted!
    // return xt::sin(std::forward<E>(expr)) + xt::cos(std::forward<E>(expr));
    // THIS IS WRONG TOO: because second `expr` is taken as reference (which will be invalid)
    // return xt::sin(std::forward<E>(expr)) + xt::cos(expr)
    auto shared_expr = xt::make_xshared(std::forward<E>(expr));
    auto result = xt::sin(shared_expr) + xt::cos(shared_expr);
    std::cout << shared_expr.use_count() << std::endl; // Will print 3 because used twice in expression
    return result; // all valid because expr lifetime managed by xshared_expression / shared_ptr.
}

Definition at line 511 of file xexpression.hpp.

Member Typedef Documentation

◆ backstrides_type

template<class E>

using xt::xshared_expression< E >::backstrides_type

Initial value:

typename std::

conditional_t<strided_expression<E>, detail::expr_backstrides_type<E>, get_strides_type<shape_type>>::type

xt::get_strides_type

Definition xutils.hpp:867

Definition at line 530 of file xexpression.hpp.

◆ base_class

template<class E>

using xt::xshared_expression< E >::base_class = xexpression<xshared_expression<E>>

Definition at line 515 of file xexpression.hpp.

◆ bool_load_type

template<class E>

using xt::xshared_expression< E >::bool_load_type = typename E::bool_load_type

Definition at line 549 of file xexpression.hpp.

◆ const_linear_iterator

template<class E>

using xt::xshared_expression< E >::const_linear_iterator = decltype(xt::linear_begin(std::declval<const E&>()))

Definition at line 545 of file xexpression.hpp.

◆ const_pointer

template<class E>

using xt::xshared_expression< E >::const_pointer = typename E::const_pointer

Definition at line 521 of file xexpression.hpp.

◆ const_reference

template<class E>

using xt::xshared_expression< E >::const_reference = typename E::const_reference

Definition at line 519 of file xexpression.hpp.

◆ const_reverse_linear_iterator

template<class E>

using xt::xshared_expression< E >::const_reverse_linear_iterator = std::reverse_iterator<const_linear_iterator>

Definition at line 547 of file xexpression.hpp.

◆ const_stepper

template<class E>

using xt::xshared_expression< E >::const_stepper = typename E::const_stepper

Definition at line 542 of file xexpression.hpp.

◆ difference_type

template<class E>

using xt::xshared_expression< E >::difference_type = typename E::difference_type

Definition at line 523 of file xexpression.hpp.

◆ inner_backstrides_type

template<class E>

using xt::xshared_expression< E >::inner_backstrides_type

Initial value:

typename std::conditional_t<
           strided_expression<E>,
           detail::expr_inner_backstrides_type<E>,
           get_strides_type<shape_type>>::type

Definition at line 534 of file xexpression.hpp.

◆ inner_shape_type

template<class E>

using xt::xshared_expression< E >::inner_shape_type = typename E::inner_shape_type

Definition at line 525 of file xexpression.hpp.

◆ inner_strides_type

template<class E>

using xt::xshared_expression< E >::inner_strides_type

Initial value:

typename std::

conditional_t<strided_expression<E>, detail::expr_inner_strides_type<E>, get_strides_type<shape_type>>::type

Definition at line 532 of file xexpression.hpp.

◆ linear_iterator

template<class E>

using xt::xshared_expression< E >::linear_iterator = decltype(xt::linear_begin(std::declval<E&>()))

Definition at line 544 of file xexpression.hpp.

◆ pointer

template<class E>

using xt::xshared_expression< E >::pointer = typename E::pointer

Definition at line 520 of file xexpression.hpp.

◆ reference

template<class E>

using xt::xshared_expression< E >::reference = typename E::reference

Definition at line 518 of file xexpression.hpp.

◆ reverse_linear_iterator

template<class E>

using xt::xshared_expression< E >::reverse_linear_iterator = std::reverse_iterator<linear_iterator>

Definition at line 546 of file xexpression.hpp.

◆ shape_type

template<class E>

using xt::xshared_expression< E >::shape_type = typename E::shape_type

Definition at line 526 of file xexpression.hpp.

◆ size_type

template<class E>

using xt::xshared_expression< E >::size_type = typename E::size_type

Definition at line 522 of file xexpression.hpp.

◆ stepper

template<class E>

using xt::xshared_expression< E >::stepper = typename E::stepper

Definition at line 541 of file xexpression.hpp.

◆ storage_type

template<class E>

using xt::xshared_expression< E >::storage_type

Initial value:

typename std::

conditional_t<container_expression<E>, detail::expr_storage_type<E>, make_invalid_type<>>::type

xt::make_invalid_type

Definition xutils.hpp:98

Definition at line 538 of file xexpression.hpp.

◆ strides_type

template<class E>

using xt::xshared_expression< E >::strides_type

Initial value:

typename std::

conditional_t<strided_expression<E>, detail::expr_strides_type<E>, get_strides_type<shape_type>>::type

Definition at line 528 of file xexpression.hpp.

◆ value_type

template<class E>

using xt::xshared_expression< E >::value_type = typename E::value_type

Definition at line 517 of file xexpression.hpp.

Constructor & Destructor Documentation

◆ xshared_expression()

template<class E>

xt::xshared_expression< E >::xshared_expression ( const std::shared_ptr< E > & ptr )

inlineexplicit

Constructor for xshared expression (note: usually the free function make_xshared is recommended).

Parameters

ptr	shared ptr that contains the expression

See also: make_xshared

Definition at line 749 of file xexpression.hpp.

Member Function Documentation

◆ backstrides()

template<class E>

template<class T = E>

std::enable_if_t< strided_expression< T >, const inner_strides_type & > xt::xshared_expression< E >::backstrides ( ) const

inline

Definition at line 650 of file xexpression.hpp.

◆ begin() [1/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::begin ( ) const -> decltype(std::declval< xtl::constify_t< E > >().template begin< L >())

inlinenoexcept

Definition at line 571 of file xexpression.hpp.

◆ begin() [2/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::begin ( ) -> decltype(std::declval< E >().template begin< L >())

inlinenoexcept

Definition at line 569 of file xexpression.hpp.

◆ begin() [3/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::begin ( const S & shape ) const -> decltype(std::declval< xtl::constify_t< E > >().template begin< L >(shape))

inlinenoexcept

Definition at line 571 of file xexpression.hpp.

◆ begin() [4/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::begin ( const S & shape ) -> decltype(std::declval< E >().template begin< L >(shape))

inlinenoexcept

Definition at line 569 of file xexpression.hpp.

◆ broadcast_shape()

template<class E>

template<class S>

bool xt::xshared_expression< E >::broadcast_shape	(	S &	shape,
		bool	reuse_cache = false ) const

inline

Definition at line 698 of file xexpression.hpp.

◆ cbegin() [1/2]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::cbegin ( ) const -> decltype(std::declval< xtl::constify_t< E > >().template cbegin< L >())

inlinenoexcept

Definition at line 573 of file xexpression.hpp.

◆ cbegin() [2/2]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::cbegin ( const S & shape ) const -> decltype(std::declval< xtl::constify_t< E > >().template cbegin< L >(shape))

inlinenoexcept

Definition at line 573 of file xexpression.hpp.

◆ cend() [1/2]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::cend ( ) const -> decltype(std::declval< xtl::constify_t< E > >().template cend< L >())

inlinenoexcept

Definition at line 574 of file xexpression.hpp.

◆ cend() [2/2]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::cend ( const S & shape ) const -> decltype(std::declval< xtl::constify_t< E > >().template cend< L >(shape))

inlinenoexcept

Definition at line 574 of file xexpression.hpp.

◆ crbegin() [1/2]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::crbegin ( ) const -> decltype(std::declval< xtl::constify_t< E > >().template crbegin< L >())

inlinenoexcept

Definition at line 580 of file xexpression.hpp.

◆ crbegin() [2/2]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::crbegin ( const S & shape ) const -> decltype(std::declval< xtl::constify_t< E > >().template crbegin< L >(shape))

inlinenoexcept

Definition at line 580 of file xexpression.hpp.

◆ crend() [1/2]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::crend ( ) const -> decltype(std::declval< xtl::constify_t< E > >().template crend< L >())

inlinenoexcept

Definition at line 581 of file xexpression.hpp.

◆ crend() [2/2]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::crend ( const S & shape ) const -> decltype(std::declval< xtl::constify_t< E > >().template crend< L >(shape))

inlinenoexcept

Definition at line 581 of file xexpression.hpp.

◆ data() [1/2]

template<class E>

template<class T = E>

std::enable_if_t< data_interface_expression< T >, pointer > xt::xshared_expression< E >::data ( ) const

inlinenoexcept

Definition at line 662 of file xexpression.hpp.

◆ data() [2/2]

template<class E>

template<class T = E>

std::enable_if_t< data_interface_expression< T >, pointer > xt::xshared_expression< E >::data ( )

inlinenoexcept

Definition at line 656 of file xexpression.hpp.

◆ data_offset()

template<class E>

template<class T = E>

std::enable_if_t< data_interface_expression< T >, size_type > xt::xshared_expression< E >::data_offset ( ) const

inlinenoexcept

Definition at line 668 of file xexpression.hpp.

◆ dimension()

template<class E>

auto xt::xshared_expression< E >::dimension ( ) const -> decltype(std::declval< xtl::constify_t< E > >().dimension())

inline

Definition at line 564 of file xexpression.hpp.

◆ element() [1/2]

template<class E>

template<class It>

reference xt::xshared_expression< E >::element	(	It	first,
		It	last )

inline

Definition at line 686 of file xexpression.hpp.

◆ element() [2/2]

template<class E>

template<class It>

const_reference xt::xshared_expression< E >::element	(	It	first,
		It	last ) const

inline

Definition at line 692 of file xexpression.hpp.

◆ end() [1/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::end ( ) const -> decltype(std::declval< xtl::constify_t< E > >().template end< L >())

inlinenoexcept

Definition at line 572 of file xexpression.hpp.

◆ end() [2/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::end ( ) -> decltype(std::declval< E >().template end< L >())

inlinenoexcept

Definition at line 570 of file xexpression.hpp.

◆ end() [3/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::end ( const S & shape ) const -> decltype(std::declval< xtl::constify_t< E > >().template end< L >(shape))

inlinenoexcept

Definition at line 572 of file xexpression.hpp.

◆ end() [4/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::end ( const S & shape ) -> decltype(std::declval< E >().template end< L >(shape))

inlinenoexcept

Definition at line 570 of file xexpression.hpp.

◆ has_linear_assign()

template<class E>

template<class S>

bool xt::xshared_expression< E >::has_linear_assign ( const S & strides ) const

inlinenoexcept

Definition at line 704 of file xexpression.hpp.

◆ is_contiguous()

template<class E>

auto xt::xshared_expression< E >::is_contiguous ( ) const -> decltype(std::declval< xtl::constify_t< E > >().is_contiguous())

inline

Definition at line 567 of file xexpression.hpp.

◆ layout()

template<class E>

auto xt::xshared_expression< E >::layout ( ) const -> decltype(std::declval< xtl::constify_t< E > >().layout())

inline

Definition at line 566 of file xexpression.hpp.

◆ linear_begin() [1/2]

template<class E>

const_linear_iterator xt::xshared_expression< E >::linear_begin ( ) const

inlinenoexcept

Definition at line 593 of file xexpression.hpp.

◆ linear_begin() [2/2]

template<class E>

linear_iterator xt::xshared_expression< E >::linear_begin ( )

inlinenoexcept

Definition at line 583 of file xexpression.hpp.

◆ linear_cbegin()

template<class E>

const_linear_iterator xt::xshared_expression< E >::linear_cbegin ( ) const

inlinenoexcept

Definition at line 603 of file xexpression.hpp.

◆ linear_cend()

template<class E>

const_linear_iterator xt::xshared_expression< E >::linear_cend ( ) const

inlinenoexcept

Definition at line 608 of file xexpression.hpp.

◆ linear_crbegin()

template<class E>

const_reverse_linear_iterator xt::xshared_expression< E >::linear_crbegin ( ) const

inlinenoexcept

Definition at line 633 of file xexpression.hpp.

◆ linear_crend()

template<class E>

const_reverse_linear_iterator xt::xshared_expression< E >::linear_crend ( ) const

inlinenoexcept

Definition at line 638 of file xexpression.hpp.

◆ linear_end() [1/2]

template<class E>

const_linear_iterator xt::xshared_expression< E >::linear_end ( ) const

inlinenoexcept

Definition at line 598 of file xexpression.hpp.

◆ linear_end() [2/2]

template<class E>

linear_iterator xt::xshared_expression< E >::linear_end ( )

inlinenoexcept

Definition at line 588 of file xexpression.hpp.

◆ linear_rbegin() [1/2]

template<class E>

const_reverse_linear_iterator xt::xshared_expression< E >::linear_rbegin ( ) const

inlinenoexcept

Definition at line 623 of file xexpression.hpp.

◆ linear_rbegin() [2/2]

template<class E>

reverse_linear_iterator xt::xshared_expression< E >::linear_rbegin ( )

inlinenoexcept

Definition at line 613 of file xexpression.hpp.

◆ linear_rend() [1/2]

template<class E>

const_reverse_linear_iterator xt::xshared_expression< E >::linear_rend ( ) const

inlinenoexcept

Definition at line 628 of file xexpression.hpp.

◆ linear_rend() [2/2]

template<class E>

reverse_linear_iterator xt::xshared_expression< E >::linear_rend ( )

inlinenoexcept

Definition at line 618 of file xexpression.hpp.

◆ operator()()

template<class E>

template<class... Args>

auto xt::xshared_expression< E >::operator() ( Args... args ) -> decltype(std::declval< E >()(args...))

inline

Definition at line 558 of file xexpression.hpp.

◆ rbegin() [1/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::rbegin ( ) const -> decltype(std::declval< xtl::constify_t< E > >().template rbegin< L >())

inlinenoexcept

Definition at line 578 of file xexpression.hpp.

◆ rbegin() [2/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::rbegin ( ) -> decltype(std::declval< E >().template rbegin< L >())

inlinenoexcept

Definition at line 576 of file xexpression.hpp.

◆ rbegin() [3/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::rbegin ( const S & shape ) const -> decltype(std::declval< xtl::constify_t< E > >().template rbegin< L >(shape))

inlinenoexcept

Definition at line 578 of file xexpression.hpp.

◆ rbegin() [4/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::rbegin ( const S & shape ) -> decltype(std::declval< E >().template rbegin< L >(shape))

inlinenoexcept

Definition at line 576 of file xexpression.hpp.

◆ rend() [1/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::rend ( ) const -> decltype(std::declval< xtl::constify_t< E > >().template rend< L >())

inlinenoexcept

Definition at line 579 of file xexpression.hpp.

◆ rend() [2/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major>

auto xt::xshared_expression< E >::rend ( ) -> decltype(std::declval< E >().template rend< L >())

inlinenoexcept

Definition at line 577 of file xexpression.hpp.

◆ rend() [3/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::rend ( const S & shape ) const -> decltype(std::declval< xtl::constify_t< E > >().template rend< L >(shape))

inlinenoexcept

Definition at line 579 of file xexpression.hpp.

◆ rend() [4/4]

template<class E>

template<layout_type L = ::xt::layout_type::row_major, class S>

auto xt::xshared_expression< E >::rend ( const S & shape ) -> decltype(std::declval< E >().template rend< L >(shape))

inlinenoexcept

Definition at line 577 of file xexpression.hpp.

◆ shape()

template<class E>

auto xt::xshared_expression< E >::shape ( ) const -> decltype(std::declval< xtl::constify_t< E > >().shape())

inline

Definition at line 563 of file xexpression.hpp.

◆ size()

template<class E>

auto xt::xshared_expression< E >::size ( ) const -> decltype(std::declval< xtl::constify_t< E > >().size())

inline

Definition at line 565 of file xexpression.hpp.

◆ stepper_begin() [1/2]

template<class E>

template<class S>

auto xt::xshared_expression< E >::stepper_begin ( const S & shape ) const -> decltype(std::declval< const E >().stepper_begin(shape))

inlinenoexcept

Definition at line 723 of file xexpression.hpp.

◆ stepper_begin() [2/2]

template<class E>

template<class S>

auto xt::xshared_expression< E >::stepper_begin ( const S & shape ) -> decltype(std::declval< E >().stepper_begin(shape))

inlinenoexcept

Definition at line 710 of file xexpression.hpp.

◆ stepper_end() [1/2]

template<class E>

template<class S>

auto xt::xshared_expression< E >::stepper_end	(	const S &	shape,
		layout_type	l ) const -> decltype(std::declval< const E >().stepper_end(shape, l))

inlinenoexcept

Definition at line 730 of file xexpression.hpp.

◆ stepper_end() [2/2]

template<class E>

template<class S>

auto xt::xshared_expression< E >::stepper_end	(	const S &	shape,
		layout_type	l ) -> decltype(std::declval< E >().stepper_end(shape, l))

inlinenoexcept

Definition at line 716 of file xexpression.hpp.

◆ storage() [1/2]

template<class E>

template<class T = E>

std::enable_if_t< data_interface_expression< T >, const typename T::storage_type & > xt::xshared_expression< E >::storage ( ) const

inlinenoexcept

Definition at line 680 of file xexpression.hpp.

◆ storage() [2/2]

template<class E>

template<class T = E>

std::enable_if_t< data_interface_expression< T >, typename T::storage_type & > xt::xshared_expression< E >::storage ( )

inlinenoexcept

Definition at line 674 of file xexpression.hpp.

◆ strides()

template<class E>

template<class T = E>

std::enable_if_t< strided_expression< T >, const inner_strides_type & > xt::xshared_expression< E >::strides ( ) const

inline

Definition at line 644 of file xexpression.hpp.

◆ use_count()

template<class E>

long xt::xshared_expression< E >::use_count ( ) const

inlinenoexcept

Return the number of times this expression is referenced.

Internally calls the use_count() function of the std::shared_ptr.

Definition at line 759 of file xexpression.hpp.

Member Data Documentation

◆ contiguous_layout

template<class E>

bool xt::xshared_expression< E >::contiguous_layout = static_layout != layout_type::dynamic

staticconstexpr

Definition at line 552 of file xexpression.hpp.

◆ static_layout

template<class E>

layout_type xt::xshared_expression< E >::static_layout = E::static_layout

staticconstexpr

Definition at line 551 of file xexpression.hpp.

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

/home/runner/work/xtensor/xtensor/include/xtensor/core/xexpression.hpp

Public Types

Public Member Functions

Static Public Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ backstrides_type

◆ base_class

◆ bool_load_type

◆ const_linear_iterator

◆ const_pointer

◆ const_reference

◆ const_reverse_linear_iterator

◆ const_stepper

◆ difference_type

◆ inner_backstrides_type

◆ inner_shape_type

◆ inner_strides_type

◆ linear_iterator

◆ pointer

◆ reference

◆ reverse_linear_iterator

◆ shape_type

◆ size_type

◆ stepper

◆ storage_type

◆ strides_type

◆ value_type

Constructor & Destructor Documentation

◆ xshared_expression()

Member Function Documentation

◆ backstrides()

◆ begin() [1/4]

◆ begin() [2/4]

◆ begin() [3/4]

◆ begin() [4/4]

◆ broadcast_shape()

◆ cbegin() [1/2]

◆ cbegin() [2/2]

◆ cend() [1/2]

◆ cend() [2/2]

◆ crbegin() [1/2]

◆ crbegin() [2/2]

◆ crend() [1/2]

◆ crend() [2/2]

◆ data() [1/2]

◆ data() [2/2]

◆ data_offset()

◆ dimension()

◆ element() [1/2]

◆ element() [2/2]

◆ end() [1/4]

◆ end() [2/4]

◆ end() [3/4]

◆ end() [4/4]

◆ has_linear_assign()

◆ is_contiguous()

◆ layout()

◆ linear_begin() [1/2]

◆ linear_begin() [2/2]

◆ linear_cbegin()

◆ linear_cend()

◆ linear_crbegin()

◆ linear_crend()

◆ linear_end() [1/2]

◆ linear_end() [2/2]

◆ linear_rbegin() [1/2]

◆ linear_rbegin() [2/2]

◆ linear_rend() [1/2]

◆ linear_rend() [2/2]

◆ operator()()

◆ rbegin() [1/4]

◆ rbegin() [2/4]

◆ rbegin() [3/4]

◆ rbegin() [4/4]

◆ rend() [1/4]

◆ rend() [2/4]

◆ rend() [3/4]

◆ rend() [4/4]

◆ shape()