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Developer Documentation |
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Centre for Vision, Speech & Signal Processing |
Comments:
The class 'BodyConstDLIterC' is a representation of iterator on
a body of a constant double-linked list. Therefore this iterator cannot
change the content of the list. Iterator is connected with a list. If the
list is empty, the iterator points to the head of the list. The result
of positioning of an iterator need not to be a proper element.
To avoid pointing to the head of the list the head skipping
moving operators NextCrc() and/or PrevCrc() must be used.
The class itself covers only the construction, copying and
destruction of the iterator. All other functions are inherited
from the BaseBodyConstDLIterC class which cannot be constructed directly.
Parent Classes:
Methods:
- BodyConstDLIterC(const BodyDListC<DataC> & list)
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Creates an iterator operating on the constant 'list'. The iterator
will point to the first element if there is any, otherwise
to the head of the list.
- BodyConstDLIterC(const BodyConstDLIterC<DataC> & iter)
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Copy constructor.
- BodyConstDLIterC<DataC> Copy() const
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Copy constructor.
- const BodyConstDLIterC<DataC> & operator=(const BodyConstDLIterC<DataC> & it)
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Assingment. This iterator will point to the same list element as
the iterator 'it'.
- const BodyConstDLIterC<DataC> & DLIter() const
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Self-identification. The function returns this object.
- ostream & operator<<(ostream & s,const BodyConstDLIterC<DataC> & elm)
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- const DataC & Data() const
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Access to the constant object contained in the list element.
- const DataC & operator*() const
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Access to the constant object contained in the list element.
- const DataC * operator->() const
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Access to the constant object contained in the list element.
- const DataC & NextData() const
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Access to the constant object contained in the list element.
- const DataC & PrevData() const
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Access to the constant object contained in the list element.
- const DataC & NextCrcData() const
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Access to the constant object contained in the list element.
- const DataC & PrevCrcData() const
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Access to the constant object contained in the list element.
- const DataC & NextData(int offset) const
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Access to the constant object contained in the list element.
- const DataC & PrevData(int offset) const
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Access to the constant object contained in the list element.
- const DataC & NextCrcData(int offset) const
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Access to the constant object contained in the list element.
- const DataC & PrevCrcData(int offset) const
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Access to the constant object contained in the list element.
- const BodyDListC<DataC> & List() const
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Returns the list whose element is pointed to by this iterator.
------------ Predicates -------------------------------------
- BooleanT operator==(const BaseBodyConstDLIterC<DataC> & it) const
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Returns TRUE if both iterators point to the same list element.
- BooleanT operator!=(const BaseBodyConstDLIterC<DataC> & it) const
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Returns TRUE if this iterators points to a different list element
than the iterator 'it'.
- BooleanT IsFirst() const
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Returns TRUE if the pointed element is the first in a list.
- BooleanT IsLast() const
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Returns TRUE if the pointed element is the last one in a list.
- BooleanT IsElm() const
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Returns TRUE if the pointed an proper element (not a head) of a list.
----------- Positioning the iterator -----------------------------
- BaseBodyConstDLIterC<DataC> & First()
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Sets the iterator to point to the first element of the list.
- BaseBodyConstDLIterC<DataC> & Last()
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Sets the iterator to point to the last element of the list.
- BaseBodyConstDLIterC<DataC> & Next()
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Moves the iterator to the successor of the element.
- void operator++(int)
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Moves the iterator to the successor of the element.
- BaseBodyConstDLIterC<DataC> & Prev()
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Moves the iterator to the predecessor of the element.
- BaseBodyConstDLIterC<DataC> & NextCrc()
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Moves the iterator to the successor of the element. If the result
element is not a proper element of the list the iterator is moved
to the first element.
- BaseBodyConstDLIterC<DataC> & PrevCrc()
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Moves the iterator to the predecessor of the element. If the result
element is not a proper element of the list the iterator is moved
to the last element.
- BaseBodyConstDLIterC<DataC> & Nth(LongIntT n)
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Sets to the n-th element of the list. The index 'n' can be
negative. The first element of the list has the index 0,
the last element has the index -1. It does not skip the head
of the list.
- BaseBodyConstDLIterC<DataC> & RelNth(LongIntT n)
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Moves to the n-th element from the current element.
The index 'n' can be positive, zero, or negative.
Particularly, the n = 0 means no move,
n = 1 means the move to the next element,
and n = -1 means the move to the previous element.
- LongIntT Index() const
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Returns the offset of an element from the first element.
Particularly, it returns 0 if the iterator points to the first
element, it returns -1 if element is the head of the list,
and it returns -2 if the element is not contained in the list.
The function does not check counter overflow.
- const BaseBodyConstDLIterC<DataC> & operator=(const BaseBodyConstDLIterC<DataC> & it)
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Assingment. This iterator will point to the same list element as
the iterator 'it'.
- const BaseBodyConstDLIterC<DataC> & DLIter() const
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Self-identification. The function returns this object.
- const BaseBodyConstDLIterC<DataC> & InsBef(const DataC & data)
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Inserts the new element containing 'data' before the element
pointed to by this iterator. This iterator is returned.
- const BaseBodyConstDLIterC<DataC> & InsAft(const DataC & data)
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Inserts the new element containing 'data' after the element
pointed to by this iterator. This iterator is returned.
- const BaseBodyConstDLIterC<DataC> & MoveBef(BaseBodyConstDLIterC<DataC> & iter)
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The element pointed to by 'iter' is moved before the element
pointed to by this iterator. This iterator will point to the same
element as before, the iterator 'iter' will point to the previous
element in the original list.
- const BaseBodyConstDLIterC<DataC> & MoveAft(BaseBodyConstDLIterC<DataC> & iter)
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The element pointed to by 'iter' is moved after the element
pointed to by this iterator. This iterator will point to the same
element as before, the iterator 'iter' will point to the previous
element in the original list.
- const BaseBodyConstDLIterC<DataC> & MoveBef(BodyDListC<DataC> & list)
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All elements of the 'list' are moved before the element
pointed to by this iterator. The 'list' will be empty after
this operation.
- const BaseBodyConstDLIterC<DataC> & MoveAft(BodyDListC<DataC> & list)
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All elements of the 'list' are moved before the element
pointed to by this iterator. The 'list' will be empty after
this operation.
- const BaseBodyConstDLIterC<DataC> & DelMoveNext()
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Deletes the element pointed to by this iterator and moves
iterator to the next element.
- const BaseBodyConstDLIterC<DataC> & Del()
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Deletes the element pointed to by this iterator and moves
iterator to the previous element.
- BooleanT IsValid() const
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Returns TRUE if the iterator was not constructed by the default
constructor.
- ostream & operator<<(ostream & s,const BaseBodyConstDLIterC<DataC> & elm)
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Programmer:Radek Marik, Documentation by CxxDoc: Tue Mar 20 10:49:27 2001
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