Aleph::StlZipView< Containers > Class Template Reference

Lazy view over multiple zipped STL containers. More...

#include <ah-stl-zip.H>

Public Types
using	iterator = StlZipIterator< std::decay_t< Containers >... >
using	const_iterator = iterator
using	value_type = typename iterator::value_type

Public Member Functions
constexpr	StlZipView (const Containers &... cs)
	Construct view from containers.
constexpr iterator	begin () const
	Get iterator to beginning.
constexpr iterator	end () const
	Get iterator to end.
constexpr bool	empty () const
	Check if view is empty.
size_t	size () const
	Get number of tuples (minimum size of all containers).

Private Attributes
std::tuple< const std::decay_t< Containers > &... >	containers_

Detailed Description

template<typename... Containers>
class Aleph::StlZipView< Containers >

Lazy view over multiple zipped STL containers.

This class provides a range interface for zipping containers without materializing the result. It can be used with range-based for loops and integrates with STL algorithms.

Memory Efficiency:

Unlike std::vector of tuples approaches, this view allocates zero additional memory beyond storing references to the original containers.

Template Parameters

Containers

Types of containers being zipped.

See also

stl_zip() Factory function

Author

Leandro Rabindranath León

Definition at line 323 of file ah-stl-zip.H.

Member Typedef Documentation

const_iterator

template<typename... Containers>

using Aleph::StlZipView< Containers >::const_iterator = iterator

Definition at line 329 of file ah-stl-zip.H.

iterator

template<typename... Containers>

using Aleph::StlZipView< Containers >::iterator = StlZipIterator<std::decay_t<Containers>...>

Definition at line 328 of file ah-stl-zip.H.

value_type

template<typename... Containers>

using Aleph::StlZipView< Containers >::value_type = typename iterator::value_type

Definition at line 330 of file ah-stl-zip.H.

Constructor & Destructor Documentation

StlZipView()

template<typename... Containers>

constexpr Aleph::StlZipView< Containers >::StlZipView ( const Containers &...  cs )

inlineexplicitconstexpr

Construct view from containers.

Parameters

cs	References to containers to zip.

Definition at line 336 of file ah-stl-zip.H.

Member Function Documentation

begin()

template<typename... Containers>

constexpr iterator Aleph::StlZipView< Containers >::begin ( ) const

inlineconstexpr

Get iterator to beginning.

Returns

Iterator positioned at first tuple.

Definition at line 343 of file ah-stl-zip.H.

References Aleph::StlZipView< Containers >::containers_, and Aleph::maps().

Referenced by Aleph::StlZipView< Containers >::empty(), and Aleph::StlZipView< Containers >::size().

empty()

template<typename... Containers>

constexpr bool Aleph::StlZipView< Containers >::empty ( ) const

inlineconstexpr

Check if view is empty.

Returns

true if any container is empty.

Definition at line 367 of file ah-stl-zip.H.

References Aleph::StlZipView< Containers >::begin(), Aleph::StlZipIterator< Containers >::has_curr(), and Aleph::maps().

end()

template<typename... Containers>

constexpr iterator Aleph::StlZipView< Containers >::end ( ) const

inlineconstexpr

Get iterator to end.

Returns

Past-the-end iterator.

Definition at line 355 of file ah-stl-zip.H.

References Aleph::StlZipView< Containers >::containers_, and Aleph::maps().

size()

template<typename... Containers>

size_t Aleph::StlZipView< Containers >::size ( ) const

inline

Get number of tuples (minimum size of all containers).

Returns

Number of tuples that would be produced.

Note

This iterates through all elements - O(n) complexity.

Definition at line 377 of file ah-stl-zip.H.

References Aleph::StlZipView< Containers >::begin(), Aleph::count(), and Aleph::StlZipIterator< Containers >::has_curr().

Member Data Documentation

containers_

template<typename... Containers>

std::tuple<const std::decay_t<Containers> &...> Aleph::StlZipView< Containers >::containers_

private

Definition at line 325 of file ah-stl-zip.H.

Referenced by Aleph::StlZipView< Containers >::begin(), and Aleph::StlZipView< Containers >::end().

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

• ah-stl-zip.H