Qore::AbstractQuantifiedIterator Class Reference

This class defines an abstract interface for iterators where the size of the object being iterated is known in advance. More...

Inheritance diagram for Qore::AbstractQuantifiedIterator:

Public Member Methods
abstract bool	empty ()
	returns True if the object to iterate is empty; False if not More...
abstract bool	first ()
	returns True if on the first element More...
abstract bool	last ()
	returns True if on the last element More...
Public Member Methods inherited from Qore::AbstractIterator
abstract auto	getValue ()
	returns the current value More...
abstract bool	next ()
	Moves the current position to the next element; returns False if there are no more elements. More...
abstract bool	valid ()
	returns True if the iterator is currently pointing at a valid element, False if not More...

Detailed Description

This class defines an abstract interface for iterators where the size of the object being iterated is known in advance.

Member Function Documentation

empty()

abstract bool Qore::AbstractQuantifiedIterator::empty ( )

pure virtual

returns True if the object to iterate is empty; False if not

Returns

True if the object to iterate is empty; False if not

Example:

if (i.empty())
    printf("object is empty\n");

Implemented in Qore::ListIterator, Qore::ListHashIterator, Qore::HashListIterator, and Qore::HashIterator.

first()

abstract bool Qore::AbstractQuantifiedIterator::first ( )

pure virtual

returns True if on the first element

Returns

True if on the first element

Example:

while (i.next()) {
    if (i.first())
        printf("START:\n");
}

Implemented in Qore::ObjectReverseIterator, Qore::ListReverseIterator, Qore::ListIterator, Qore::ListHashReverseIterator, Qore::ListHashIterator, Qore::HashReverseIterator, Qore::HashListReverseIterator, Qore::HashListIterator, and Qore::HashIterator.

last()

abstract bool Qore::AbstractQuantifiedIterator::last ( )

pure virtual

returns True if on the last element

Returns

True if on the last element

Example:

while (i.next()) {
    if (i.last())
        printf("END.\n");
}

Implemented in Qore::ObjectReverseIterator, Qore::ListReverseIterator, Qore::ListIterator, Qore::ListHashReverseIterator, Qore::ListHashIterator, Qore::HashReverseIterator, Qore::HashListReverseIterator, Qore::HashListIterator, and Qore::HashIterator.