ReverseConstHashIterator Class Reference

reverse constant iterator class for QoreHashNode, to be only created on the stack More...

#include <QoreHashNode.h>

Inheritance diagram for ReverseConstHashIterator:

Collaboration diagram for ReverseConstHashIterator:

Public Member Methods
DLLEXPORT	ReverseConstHashIterator (const QoreHashNode &h)
	initializes the iterator with the passed hash
DLLEXPORT	ReverseConstHashIterator (const QoreHashNode *h)
	initializes the iterator with the passed hash
DLLEXPORT	~ReverseConstHashIterator ()
	Destroys the iterator.
DLLEXPORT bool	first () const
	returns true if on the last key of the hash
DLLEXPORT bool	last () const
	returns true if on the first key of the hash
DLLEXPORT bool	next ()
	moves to the next element in reverse order, returns false when there are no more elements to iterate More...
DLLEXPORT bool	prev ()
	moves to the previous element in reverse order, returns false when there are no more elements to iterate More...
Public Member Methods inherited from ConstHashIterator
DLLLOCAL	ConstHashIterator (const ConstHashIterator &)
	copy constructor
DLLEXPORT	ConstHashIterator (const QoreHashNode &h)
	initializes the iterator with the passed hash
DLLEXPORT	ConstHashIterator (const QoreHashNode *h)
	initializes the iterator with the passed hash
DLLEXPORT	~ConstHashIterator ()
	Destroys the iterator.
DLLEXPORT bool	empty () const
	returns true if the hash is empty
DLLEXPORT bool	first () const
	returns true if on the first key of the hash
const DLLEXPORT QoreValue	get () const
	returns the value of the current key
const DLLEXPORT QoreHashNode *	getHash () const
	returns the hash
const DLLEXPORT char *	getKey () const
	returns the current key
DLLEXPORT QoreString *	getKeyString () const
	returns a QoreString for the current key, the caller owns QoreString returned
DLLEXPORT QoreValue	getReferenced () const
	returns the value of the current key with an incremented reference count
const DLLEXPORT QoreTypeInfo *	getTypeInfo () const
	returns the type info for the current value
DLLEXPORT bool	last () const
	returns true if on the last key of the hash
DLLEXPORT bool	next ()
	moves to the next element, returns false when there are no more elements to iterate More...
DLLEXPORT bool	prev ()
	moves to the previous element, returns false when there are no more elements to iterate More...
DLLEXPORT void	reset ()
	resets the iterator to its initial state
DLLEXPORT bool	valid () const
	returns true if the iterator is currently pointing at a valid element

Additional Inherited Members
Private Member Methods inherited from ConstHashIterator
DLLLOCAL ConstHashIterator &	operator= (const HashIterator &)
	this function is not implemented; it is here as a protected function in order to prohibit it from being used

Detailed Description

reverse constant iterator class for QoreHashNode, to be only created on the stack

ReverseConstHashIterator hi(h);
while (hi.next()) {
    QoreStringValueHelper str(hi.get());
    printf("key: '%s', value: '%s'\n", hi.getKey(), str->getBuffer());
}

Member Function Documentation

next()

DLLEXPORT bool ReverseConstHashIterator::next

(

)

moves to the next element in reverse order, returns false when there are no more elements to iterate

also moves to the last element if the object has just been initialized after a complete iteration (assuming there is at least one element in the hash)

prev()

DLLEXPORT bool ReverseConstHashIterator::prev

(

)

moves to the previous element in reverse order, returns false when there are no more elements to iterate

also moves to the first element if the object has just been initialized after a complete iteration (assuming there is at least one element in the hash)

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

• /tmp/qore/include/qore/QoreHashNode.h