deal.II version 9.7.0
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IndexSet::ElementIterator Class Reference

#include <deal.II/base/index_set.h>

Detailed Description

Class that represents an iterator pointing to a single element in the IndexSet as returned by IndexSet::begin().

Definition at line 877 of file index_set.h.

Public Types

using iterator_category = std::forward_iterator_tag
using value_type = size_type
using difference_type = std::ptrdiff_t
using pointer = size_type *
using reference = size_type &

Public Member Functions

 ElementIterator (const IndexSet *idxset, const size_type range_idx, const size_type index)
 ElementIterator (const IndexSet *idxset)
size_type operator* () const
bool is_valid () const
ElementIterator & operator++ ()
ElementIterator operator++ (int)
bool operator== (const ElementIterator &) const
bool operator!= (const ElementIterator &) const
bool operator< (const ElementIterator &) const
std::ptrdiff_t operator- (const ElementIterator &p) const

Private Member Functions

void advance ()

Private Attributes

const IndexSet * index_set
size_type range_idx
size_type idx

Member Typedef Documentation

◆ iterator_category

using IndexSet::ElementIterator::iterator_category = std::forward_iterator_tag

Mark the class as forward iterator and declare some alias which are standard for iterators and are used by algorithms to enquire about the specifics of the iterators they work on.

Definition at line 952 of file index_set.h.

◆ value_type

using IndexSet::ElementIterator::value_type = size_type

Definition at line 953 of file index_set.h.

◆ difference_type

using IndexSet::ElementIterator::difference_type = std::ptrdiff_t

Definition at line 954 of file index_set.h.

◆ pointer

using IndexSet::ElementIterator::pointer = size_type *

Definition at line 955 of file index_set.h.

◆ reference

using IndexSet::ElementIterator::reference = size_type &

Definition at line 956 of file index_set.h.

Constructor & Destructor Documentation

◆ ElementIterator() [1/2]

IndexSet::ElementIterator::ElementIterator ( const IndexSet * idxset,
const size_type range_idx,
const size_type index )
inline

Construct an iterator pointing to the global index index in the interval range_idx

Definition at line 1473 of file index_set.h.

◆ ElementIterator() [2/2]

IndexSet::ElementIterator::ElementIterator ( const IndexSet * idxset)
inlineexplicit

Construct an iterator pointing to the end of the IndexSet.

Definition at line 1493 of file index_set.h.

Member Function Documentation

◆ operator*()

IndexSet::size_type IndexSet::ElementIterator::operator* ( ) const
inline

Dereferencing operator. The returned value is the index of the element inside the IndexSet.

Definition at line 1517 of file index_set.h.

◆ is_valid()

bool IndexSet::ElementIterator::is_valid ( ) const
inline

Does this iterator point to an existing element?

Definition at line 1502 of file index_set.h.

◆ operator++() [1/2]

IndexSet::ElementIterator & IndexSet::ElementIterator::operator++ ( )
inline

Prefix increment.

Definition at line 1570 of file index_set.h.

◆ operator++() [2/2]

IndexSet::ElementIterator IndexSet::ElementIterator::operator++ ( int )
inline

Postfix increment.

Definition at line 1579 of file index_set.h.

◆ operator==()

bool IndexSet::ElementIterator::operator== ( const ElementIterator & other) const
inline

Comparison.

Definition at line 1529 of file index_set.h.

◆ operator!=()

bool IndexSet::ElementIterator::operator!= ( const ElementIterator & other) const
inline

Inverse of ==.

Definition at line 1589 of file index_set.h.

◆ operator<()

bool IndexSet::ElementIterator::operator< ( const ElementIterator & other) const
inline

Comparison operator.

Definition at line 1597 of file index_set.h.

◆ operator-()

std::ptrdiff_t IndexSet::ElementIterator::operator- ( const ElementIterator & p) const
inline

Return the distance between the current iterator and the argument. In the expression it_left-it_right the distance is given by how many times one has to apply operator++ to the right operand it_right to get the left operand it_left (for a positive return value), or to it_left to get the it_right (for a negative return value).

Definition at line 1611 of file index_set.h.

◆ advance()

void IndexSet::ElementIterator::advance ( )
inlineprivate

Advance iterator by one.

Definition at line 1541 of file index_set.h.

Member Data Documentation

◆ index_set

const IndexSet* IndexSet::ElementIterator::index_set
private

The parent IndexSet.

Definition at line 968 of file index_set.h.

◆ range_idx

size_type IndexSet::ElementIterator::range_idx
private

Index into index_set.ranges.

Definition at line 972 of file index_set.h.

◆ idx

size_type IndexSet::ElementIterator::idx
private

The global index this iterator is pointing at.

Definition at line 976 of file index_set.h.

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