detray::ranges::views::pick< range_itr_t, sequence_t > Struct Template Reference

Range adaptor that selects indexed elements from an input range. More...

#include <detray/utils/ranges/pick.hpp>

Inheritance diagram for detray::ranges::views::pick< range_itr_t, sequence_t >:

Collaboration diagram for detray::ranges::views::pick< range_itr_t, sequence_t >:

Public Types
using	base_type = pick_view<range_itr_t, sequence_itr_t>
	Base view implementation combining range and sequence iterators.
using	sequence_itr_t
	Iterator type used to read the selection sequence.

Public Member Functions
template<detray::ranges::input_range deduced_sequence_t>
constexpr	pick (deduced_sequence_t &&seq)
	Build an adaptor that will select the supplied indices from a later range.
template<detray::ranges::range range_t, detray::ranges::input_range deduced_sequence_t>
constexpr	pick (range_t &&range, deduced_sequence_t &&seq)
	Construct the selection view immediately from both inputs.
template<detray::ranges::range range_t> requires (!std::same_as<sequence_t, std::remove_cvref_t<sequence_t>> || std::is_pointer_v<sequence_t>)
constexpr auto	operator() (range_t &&rng)
	Call operator for range composition.
template<detray::ranges::range range_t> requires (std::same_as<sequence_t, std::remove_cvref_t<sequence_t>> && !std::is_pointer_v<sequence_t>)
constexpr auto	operator() (range_t &&rng) &&
	Call operator for range composition - move semantics.
pick &	operator= (const pick &other)
	Copy assignment operator.
Public Member Functions inherited from detray::ranges::view_interface< pick_view< range_itr_t, sequence_itr_t > >
constexpr decltype(auto)	back () const
	Return a reference to the last element.
constexpr auto	data () const
	Return a pointer to the first element, or null for an empty view.
constexpr auto	empty () const -> bool
	Check whether the view contains no elements.
constexpr decltype(auto)	front () const
	Return a reference to the first element.
constexpr	operator bool () const
	Test whether the view contains at least one element.
constexpr decltype(auto)	operator[] (const dindex i) const
	Subscript operator that takes detray dindex.
constexpr auto	size () const
	Return the number of elements in the view.

Detailed Description

template<std::input_iterator range_itr_t, detray::ranges::input_range sequence_t>
struct detray::ranges::views::pick< range_itr_t, sequence_t >

Range adaptor that selects indexed elements from an input range.

Member Typedef Documentation

sequence_itr_t

template<std::input_iterator range_itr_t, detray::ranges::input_range sequence_t>

using detray::ranges::views::pick< range_itr_t, sequence_t >::sequence_itr_t

Initial value:

 
      detray::ranges::const_iterator_t<std::decay_t<sequence_t>>

Iterator type used to read the selection sequence.

Constructor & Destructor Documentation

pick() [1/2]

template<std::input_iterator range_itr_t, detray::ranges::input_range sequence_t>

template<detray::ranges::input_range deduced_sequence_t>

detray::ranges::views::pick< range_itr_t, sequence_t >::pick ( deduced_sequence_t && seq )

explicitconstexpr

Build an adaptor that will select the supplied indices from a later range.

Parameters

seq	sequence of indices to use

pick() [2/2]

template<std::input_iterator range_itr_t, detray::ranges::input_range sequence_t>

template<detray::ranges::range range_t, detray::ranges::input_range deduced_sequence_t>

detray::ranges::views::pick< range_itr_t, sequence_t >::pick ( range_t && range, deduced_sequence_t && seq )

constexpr

Construct the selection view immediately from both inputs.

Parameters

range	range from which elements are selected
seq	sequence of indices to use

Member Function Documentation

operator()() [1/2]

template<std::input_iterator range_itr_t, detray::ranges::input_range sequence_t>

template<detray::ranges::range range_t>
requires (!std::same_as<sequence_t, std::remove_cvref_t<sequence_t>> || std::is_pointer_v<sequence_t>)

auto detray::ranges::views::pick< range_itr_t, sequence_t >::operator() ( range_t && rng )

constexpr

Call operator for range composition.

Parameters

rng	range from which elements are selected

Returns

view using the stored selection sequence

operator()() [2/2]

template<std::input_iterator range_itr_t, detray::ranges::input_range sequence_t>

template<detray::ranges::range range_t>
requires (std::same_as<sequence_t, std::remove_cvref_t<sequence_t>> && !std::is_pointer_v<sequence_t>)

auto detray::ranges::views::pick< range_itr_t, sequence_t >::operator() ( range_t && rng ) &&

constexpr

Call operator for range composition - move semantics.

Parameters

rng	range from which elements are selected

Returns

view that owns the moved selection sequence

operator=()

template<std::input_iterator range_itr_t, detray::ranges::input_range sequence_t>

pick & detray::ranges::views::pick< range_itr_t, sequence_t >::operator=

(

const pick< range_itr_t, sequence_t > &

other

)

Copy assignment operator.

Parameters

other

adaptor to copy

Returns

reference to this adaptor