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< td align = "right" valign = "center" > < img src = "logo32.png" align = "right" width = "64" height = "32" border = "0" > < / td > < / tr > < / table > < h1 align = center > TQAsciiCacheIterator Class Reference< / h1 >
< p > The TQAsciiCacheIterator class provides an iterator for TQAsciiCache collections.
< a href = "#details" > More...< / a >
< p > < tt > #include < < a href = "qasciicache-h.html" > ntqasciicache.h< / a > > < / tt >
< p > < a href = "qasciicacheiterator-members.html" > List of all member functions.< / a >
< h2 > Public Members< / h2 >
< ul >
< li class = fn > < a href = "#TQAsciiCacheIterator" > < b > TQAsciiCacheIterator< / b > < / a > ( const TQAsciiCache< type> & cache )< / li >
< li class = fn > < a href = "#TQAsciiCacheIterator-2" > < b > TQAsciiCacheIterator< / b > < / a > ( const TQAsciiCacheIterator< type> & ci )< / li >
< li class = fn > TQAsciiCacheIterator< type> & < a href = "#operator-eq" > < b > operator=< / b > < / a > ( const TQAsciiCacheIterator< type> & ci )< / li >
< li class = fn > uint < a href = "#count" > < b > count< / b > < / a > () const< / li >
< li class = fn > bool < a href = "#isEmpty" > < b > isEmpty< / b > < / a > () const< / li >
< li class = fn > bool < a href = "#atFirst" > < b > atFirst< / b > < / a > () const< / li >
< li class = fn > bool < a href = "#atLast" > < b > atLast< / b > < / a > () const< / li >
< li class = fn > type * < a href = "#toFirst" > < b > toFirst< / b > < / a > ()< / li >
< li class = fn > type * < a href = "#toLast" > < b > toLast< / b > < / a > ()< / li >
< li class = fn > < a href = "#operator-type-*" > < b > operator type *< / b > < / a > () const< / li >
< li class = fn > type * < a href = "#current" > < b > current< / b > < / a > () const< / li >
< li class = fn > const char * < a href = "#currentKey" > < b > currentKey< / b > < / a > () const< / li >
< li class = fn > type * < a href = "#operator()" > < b > operator()< / b > < / a > ()< / li >
< li class = fn > type * < a href = "#operator++" > < b > operator++< / b > < / a > ()< / li >
< li class = fn > type * < a href = "#operator+-eq" > < b > operator+=< / b > < / a > ( uint jump )< / li >
< li class = fn > type * < a href = "#operator--" > < b > operator--< / b > < / a > ()< / li >
< li class = fn > type * < a href = "#operator--eq" > < b > operator-=< / b > < / a > ( uint jump )< / li >
< / ul >
< hr > < a name = "details" > < / a > < h2 > Detailed Description< / h2 >
The TQAsciiCacheIterator class provides an iterator for < a href = "ntqasciicache.html" > TQAsciiCache< / a > collections.
< p >
< p > Note that the traversal order is arbitrary; you are not guaranteed
any particular order. If new objects are inserted into the cache
while the iterator is active, the iterator may or may not see
them.
< p > Multiple iterators are completely independent, even when they
operate on the same TQAsciiCache. TQAsciiCache updates all iterators
that refer an item when that item is removed.
< p > TQAsciiCacheIterator provides an < a href = "#operator++" > operator++< / a > () and an < a href = "#operator+-eq" > operator+=< / a > ()
to traverse the cache; < a href = "#current" > current< / a > () and < a href = "#currentKey" > currentKey< / a > () to access the
current cache item and its key. It also provides < a href = "#atFirst" > atFirst< / a > () and
< a href = "#atLast" > atLast< / a > (), which return TRUE if the iterator points to the first or
last item in the cache respectively. The < a href = "#isEmpty" > isEmpty< / a > () function
returns TRUE if the cache is empty; and < a href = "#count" > count< / a > () returns the number
of items in the cache.
< p > Note that atFirst() and atLast() refer to the iterator's arbitrary
ordering, not to the cache's internal least recently used list.
< p > < p > See also < a href = "ntqasciicache.html" > TQAsciiCache< / a > , < a href = "collection.html" > Collection Classes< / a > , and < a href = "tools.html" > Non-GUI Classes< / a > .
< hr > < h2 > Member Function Documentation< / h2 >
< h3 class = fn > < a name = "TQAsciiCacheIterator" > < / a > TQAsciiCacheIterator::TQAsciiCacheIterator ( const < a href = "ntqasciicache.html" > TQAsciiCache< / a > < type> & cache )
< / h3 >
< p > Constructs an iterator for < em > cache< / em > . The current iterator item is
set to point to the first item in the < em > cache< / em > .
< h3 class = fn > < a name = "TQAsciiCacheIterator-2" > < / a > TQAsciiCacheIterator::TQAsciiCacheIterator ( const < a href = "qasciicacheiterator.html" > TQAsciiCacheIterator< / a > < type> & ci )
< / h3 >
< p > Constructs an iterator for the same cache as < em > ci< / em > . The new
iterator starts at the same item as ci.< a href = "#current" > current< / a > () but moves
independently from there on.
< h3 class = fn > bool < a name = "atFirst" > < / a > TQAsciiCacheIterator::atFirst () const
< / h3 >
< p > Returns TRUE if the iterator points to the first item in the
cache; otherwise returns FALSE. Note that this refers to the
iterator's arbitrary ordering, not to the cache's internal least
recently used list.
< p > < p > See also < a href = "#toFirst" > toFirst< / a > () and < a href = "#atLast" > atLast< / a > ().
< h3 class = fn > bool < a name = "atLast" > < / a > TQAsciiCacheIterator::atLast () const
< / h3 >
< p > Returns TRUE if the iterator points to the last item in the cache;
otherwise returns FALSE. Note that this refers to the iterator's
arbitrary ordering, not to the cache's internal least recently
used list.
< p > < p > See also < a href = "#toLast" > toLast< / a > () and < a href = "#atFirst" > atFirst< / a > ().
< h3 class = fn > uint < a name = "count" > < / a > TQAsciiCacheIterator::count () const
< / h3 >
< p > Returns the number of items in the cache over which this iterator
operates.
< p > < p > See also < a href = "#isEmpty" > isEmpty< / a > ().
< h3 class = fn > type * < a name = "current" > < / a > TQAsciiCacheIterator::current () const
< / h3 >
< p > Returns a pointer to the current iterator item.
< h3 class = fn > const char * < a name = "currentKey" > < / a > TQAsciiCacheIterator::currentKey () const
< / h3 >
< p > Returns the key for the current iterator item.
< h3 class = fn > bool < a name = "isEmpty" > < / a > TQAsciiCacheIterator::isEmpty () const
< / h3 >
< p > Returns TRUE if the cache is empty, i.e. < a href = "#count" > count< / a > () == 0; otherwise
returns FALSE.
< p > < p > See also < a href = "#count" > count< / a > ().
< h3 class = fn > < a name = "operator-type-*" > < / a > TQAsciiCacheIterator::operator type * () const
< / h3 >
< p > Cast operator. Returns a pointer to the current iterator item.
Same as < a href = "#current" > current< / a > ().
< h3 class = fn > type * < a name = "operator()" > < / a > TQAsciiCacheIterator::operator() ()
< / h3 >
< p > Makes the succeeding item current and returns the original current
item.
< p > If the current iterator item was the last item in the cache or if
it was 0, 0 is returned.
< h3 class = fn > type * < a name = "operator++" > < / a > TQAsciiCacheIterator::operator++ ()
< / h3 >
< p > Prefix ++ makes the iterator point to the item just after
< a href = "#current" > current< / a > (), and makes that the new current item for the iterator. If
current() was the last item, < a href = "#operator++" > operator++< / a > () returns 0.
< h3 class = fn > type * < a name = "operator+-eq" > < / a > TQAsciiCacheIterator::operator+= ( uint jump )
< / h3 >
< p > Returns the item < em > jump< / em > positions after the current item, or 0
if it is beyond the last item. Makes this the current item.
< h3 class = fn > type * < a name = "operator--" > < / a > TQAsciiCacheIterator::operator-- ()
< / h3 >
< p > Prefix -- makes the iterator point to the item just before
< a href = "#current" > current< / a > (), and makes that the new current item for the iterator. If
current() was the first item, < a href = "#operator--" > operator--< / a > () returns 0.
< h3 class = fn > type * < a name = "operator--eq" > < / a > TQAsciiCacheIterator::operator-= ( uint jump )
< / h3 >
< p > Returns the item < em > jump< / em > positions before the current item, or 0
if it is before the first item. Makes this the current item.
< h3 class = fn > < a href = "qasciicacheiterator.html" > TQAsciiCacheIterator< / a > < type> & < a name = "operator-eq" > < / a > TQAsciiCacheIterator::operator= ( const < a href = "qasciicacheiterator.html" > TQAsciiCacheIterator< / a > < type> & ci )
< / h3 >
< p > Makes this an iterator for the same cache as < em > ci< / em > . The new
iterator starts at the same item as ci.< a href = "#current" > current< / a > (), but moves
independently thereafter.
< h3 class = fn > type * < a name = "toFirst" > < / a > TQAsciiCacheIterator::toFirst ()
< / h3 >
< p > Sets the iterator to point to the first item in the cache and
returns a pointer to the item.
< p > Sets the iterator to 0 and returns 0 if the cache is empty.
< p > < p > See also < a href = "#toLast" > toLast< / a > () and < a href = "#isEmpty" > isEmpty< / a > ().
< h3 class = fn > type * < a name = "toLast" > < / a > TQAsciiCacheIterator::toLast ()
< / h3 >
< p > Sets the iterator to point to the last item in the cache and
returns a pointer to the item.
< p > Sets the iterator to 0 and returns 0 if the cache is empty.
< p > < p > See also < a href = "#isEmpty" > isEmpty< / a > ().
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