quantumdata::ldo::DiagonalIterator< RANK, V > Class Template Reference

Iterator for slices of a LazyDensityOperator that are diagonal in the dummy indices. More...

#include <LazyDensityOperatorSliceIterator.h>

Inheritance diagram for quantumdata::ldo::DiagonalIterator< RANK, V >:

Collaboration diagram for quantumdata::ldo::DiagonalIterator< RANK, V >:

Public Types
typedef boost::shared_ptr< typename mpl::eval_if_c< IS_SPECIAL, mpl::identity< DI_ImplSpecial >, mpl::identity< DI_Impl > >::type >	Impl
	Base class for non-special implementations. More...

Public Member Functions
template<bool IS_END>
	DiagonalIterator (const LazyDensityOperator< RANK > &ldo, mpl::bool_< IS_END >)
	Constructor. More...
Necessary members of an input iterator
DiagonalIterator &	operator++ ()
	Immediately delegated to the implementation.
const LazyDensityOperatorRes &	operator* () const
	”
bool	operator== (const DiagonalIterator &other) const
	”

Static Public Attributes
static const bool	IS_SPECIAL =(RANK==mpl::size<V>::value)
	Signifies whether the special implementation is needed.

Detailed Description

template<int RANK, typename V>
class quantumdata::ldo::DiagonalIterator< RANK, V >

Iterator for slices of a LazyDensityOperator that are diagonal in the dummy indices.

Cf. rationale

Template Parameters

RANK	arity of the full (unsliced) Hilbert space
V	compile-time vector holding the retained index positions (cf. Specifying subsystems)

It's inherently a const iterator since LazyDensityOperator is immutable. Models an InputIterator, implemented with the help of input_iterator_helper from Boost.Operator.

Definition at line 70 of file LazyDensityOperatorSliceIterator.h.

Member Typedef Documentation

template<int RANK, typename V>

typedef boost::shared_ptr<typename mpl::eval_if_c<IS_SPECIAL, mpl::identity<DI_ImplSpecial>, mpl::identity<DI_Impl > >::type > quantumdata::ldo::DiagonalIterator< RANK, V >::Impl

Base class for non-special implementations.

Pointer to implementation We are using the classical inheritance-based pointer-to-implementation technique, together with some compile-time dispatching. eval_if from Boost.MPL here guarantees that DI_ImplSpecial gets instantiated only in the special case

Definition at line 101 of file LazyDensityOperatorSliceIterator.h.

Constructor & Destructor Documentation

template<int RANK, typename V>

template<bool IS_END>

quantumdata::ldo::DiagonalIterator< RANK, V >::DiagonalIterator	(	const LazyDensityOperator< RANK > &	ldo,
		mpl::bool_< IS_END >
	)

Constructor.

Similarly to blitzplusplus::basi::Iterator, it can be initialised either to the beginning or to the end of the sequence.

Template Parameters

IS_END

governs the end-ness

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

• quantumdata/LazyDensityOperatorSliceIterator.h