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diff --git a/qtools/qlist.doc b/qtools/qlist.doc new file mode 100644 index 0000000..85dbf5b --- /dev/null +++ b/qtools/qlist.doc @@ -0,0 +1,1048 @@ +/**************************************************************************** +** $Id$ +** +** QList and QListIterator class documentation +** +** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. +** +** This file is part of the Qt GUI Toolkit. +** +** This file may be distributed under the terms of the Q Public License +** as defined by Trolltech AS of Norway and appearing in the file +** LICENSE.QPL included in the packaging of this file. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition +** licenses may use this file in accordance with the Qt Commercial License +** Agreement provided with the Software. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for +** information about Qt Commercial License Agreements. +** See http://www.trolltech.com/qpl/ for QPL licensing information. +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + + +/***************************************************************************** + QList documentation + *****************************************************************************/ + +/*! + \class QList qlist.h + \brief The QList class is a template class that provides doubly linked lists. + + \ingroup collection + \ingroup tools + + In Qt 2.0 QList is only implemented as a template class. Define a + template instance QList\<X\> to create a list that operates on pointers + to X, or X*. + + Example: + \code + #include <qlist.h> + #include <qstring.h> + #include <stdio.h> + + class Employee + { + public: + Employee( const QString& name, int salary ) { n=name; s=salary; } + QString name() const { return n; } + int salary() const { return s; } + private: + QString n; + int s; + }; + + void main() + { + QList<Employee> list; // list of pointers to Employee + list.setAutoDelete( TRUE ); // delete items when they are removed + + list.append( new Employee("Bill", 50000) ); + list.append( new Employee("Steve",80000) ); + list.append( new Employee("Ron", 60000) ); + + Employee *emp; + for ( emp=list.first(); emp != 0; emp=list.next() ) + printf( "%s earns %d\n", emp->name().latin1(), emp->salary() ); + } + \endcode + + Program output: + \code + Bill earns 50000 + Steve earns 80000 + Ron earns 60000 + \endcode + + The list class is indexable and has a \link at() current index\endlink + and a \link current() current item\endlink. The first item corresponds + to index 0. The current index is -1 if the current item is null. + + QList has several member functions for traversing the list, but using + a QListIterator can be more practical. Multiple list iterators may + traverse the same list, independent of each other and independent of + the current list item. + + In the example above, we make the call setAutoDelete(TRUE). + Enabling auto-deletion tells the list to delete items that are removed + from the list. The default is to not delete items when they are + removed, but that would cause a memory leak in our example since we have + no other references to the list items. + + List items are stored as \c void* in an internal QLNode, which also + holds pointers to the next and previous list items. The functions + currentNode(), removeNode() and takeNode() operate directly on the + QLNode, but they should be used with care. + + When inserting an item into a list, only the pointer is copied, not the + item itself. This is called a shallow copy. It is possible to make the + list copy all of the item's data (known as a deep copy) when an item is + inserted. insert(), inSort() and append() call the virtual function + QCollection::newItem() for the item to be inserted. + Inherit a list and reimplement it if you want deep copies. + + When removing an item from a list, the virtual function + QCollection::deleteItem() is called. QList's default implementation + is to delete the item if auto-deletion is enabled. + + The virtual function QGList::compareItems() can be reimplemented to + compare two list items. This function is called from all list functions + that need to compare list items, for instance remove(const type*). + If you only want to deal with pointers, there are functions that + compare pointers instead, for instance removeRef(const type*). + These functions are somewhat faster than those that call compareItems(). + + The QStrList class in qstrlist.h is a list of \c char*. QStrList is + a good example of a list that reimplements newItem(), deleteItem() and + compareItems() + + \sa QListIterator, \link collection.html Collection Classes\endlink +*/ + + +/*! + \fn QList::QList() + Constructs an empty list. +*/ + +/*! + \fn QList::QList( const QList<type> &list ) + Constructs a copy of \e list. + + Each item in \e list is \link append() appended\endlink to this list. + Only the pointers are copied (shallow copy). +*/ + +/*! + \fn QList::~QList() + Removes all items from the list and destroys the list. + + All list iterators that access this list will be reset. + + \sa setAutoDelete() +*/ + +/*! + \fn QList<type> &QList::operator=(const QList<type> &list) + Assigns \e list to this list and returns a reference to this list. + + This list is first cleared, then each item in \e list is + \link append() appended\endlink to this list. Only the pointers are copied + (shallow copy), unless newItem() has been reimplemented(). +*/ + +/*! + \fn bool QList::operator==(const QList<type> &list ) const + + Compares this list with \a list. Retruns TRUE if the lists + contain the same data, else FALSE. +*/ + +/*! + \fn uint QList::count() const + Returns the number of items in the list. + \sa isEmpty() +*/ + +/*! + \fn void QList::sort() + + Sorts the list by the result of the virtual compareItems() function. + + The Heap-Sort algorithm is used for sorting. It sorts n items with + O(n*log n) compares. This is the asymptotic optimal solution of the + sorting problem. + + If the items in your list support operator< and operator== then you + might be better off with QSortedList since it implements the + compareItems() function for you using these two operators. + + \sa inSort() +*/ + +/*! + \fn bool QList::isEmpty() const + Returns TRUE if the list is empty, i.e. count() == 0. Returns FALSE + otherwise. + \sa count() +*/ + +/*! + \fn bool QList::insert( uint index, const type *item ) + Inserts the \e item at the position \e index in the list. + + Returns TRUE if successful, or FALSE if \e index is out of range. + The valid range is <code>0 .. count()</code> inclusive. + The item is appended if \e index == count(). + + The inserted item becomes the current list item. + + The \e item must not be a null pointer. + + \sa append(), current() +*/ + +/*! + \fn void QList::inSort( const type *item ) + Inserts the \e item at its sorted position in the list. + + The sort order depends on the virtual QGList::compareItems() function. + All items must be inserted with inSort() to maintain the sorting order. + + The inserted item becomes the current list item. + + The \e item must not be a null pointer. + + Please note that inSort is slow. If you want to insert lots of items + in a list and sort after inserting then you should use sort(). + inSort() takes up to O(n) compares. That means inserting n items in + your list will need O(n^2) compares while sort() only needs O(n*logn) + for the same task. So you inSort() only if you already have a pre-sorted + list and want to insert only few additional items. + + \sa insert(), QGList::compareItems(), current(), sort() +*/ + +/*! + \fn void QList::append( const type *item ) + Inserts the \e item at the end of the list. + + The inserted item becomes the current list item. + This is equivalent to \c insert(count(),item). + + + The \e item must not be a null pointer. + + \sa insert(), current(), prepend() +*/ + +/*! + \fn void QList::prepend( const type *item ) + + Inserts the \e item at the start of the list. + + The inserted item becomes the current list item. + This is equivalent to \c insert(0,item). + + The \e item must not be a null pointer. + + \sa append(), insert(), current() +*/ + +/*! + \fn bool QList::remove( uint index ) + Removes the item at position \e index in the list. + + Returns TRUE if successful, or FALSE if \e index is out of range. + The valid range is <code>0 .. (count() - 1)</code> inclusive. + + The removed item is deleted if \link QCollection::setAutoDelete() + auto-deletion\endlink is enabled. + + The item after the removed item becomes the new current list item if + the removed item is not the last item in the list. If the last item + is removed, the new last item becomes the current item in Qt 2.x. + In 3.0, the current item will be set to null. The current item is + set to null if the list becomes empty. + + All list iterators that refer to the removed item will be set to point + to the new current item. + + \sa take(), clear(), setAutoDelete(), current() removeRef() +*/ + +/*! + \fn bool QList::remove() + Removes the current list item. + + Returns TRUE if successful, or FALSE if the current item is null. + + The removed item is deleted if \link QCollection::setAutoDelete() + auto-deletion\endlink is enabled. + + The item after the removed item becomes the new current list item if + the removed item is not the last item in the list. If the last item + is removed, the new last item becomes the current item in Qt 2.x. + In 3.0, the current item will be set to null. The current item is + set to null if the list becomes empty. + + All list iterators that refer to the removed item will be set to point + to the new current item. + + \sa take(), clear(), setAutoDelete(), current() removeRef() +*/ + +/*! + \fn bool QList::remove( const type *item ) + Removes the first occurrence of \e item from the list. + + Returns TRUE if successful, or FALSE if the item could not be found in the + list. + + The removed item is deleted if \link QCollection::setAutoDelete() + auto-deletion\endlink is enabled. + + The compareItems() function is called when searching for the item + in the list. If compareItems() is not reimplemented, it is more + efficient to call removeRef(). + + The item after the removed item becomes the new current list item if + the removed item is not the last item in the list. If the last item + is removed, the new last item becomes the current item in Qt 2.x. + In 3.0, the current item will be set to null. The current item is + set to null if the list becomes empty. + + All list iterators that refer to the removed item will be set to point + to the new current item. + + \sa removeRef(), take(), clear(), setAutoDelete(), compareItems(), current() +*/ + +/*! + \fn bool QList::removeRef( const type *item ) + Removes the first occurrence of \e item from the list. + + Returns TRUE if successful, or FALSE if the item cannot be found in the + list. + + The removed item is deleted if \link QCollection::setAutoDelete() + auto-deletion\endlink is enabled. + + The list is scanned until the pointer \e item is found. It is removed + if it is found. + + Equivalent to: + \code + if ( list.findRef(item) != -1 ) + list.remove(); + \endcode + + The item after the removed item becomes the new current list item if + the removed item is not the last item in the list. If the last item + is removed, the new last item becomes the current item in Qt 2.x. + In 3.0, the current item will be set to null. The current item is + set to null if the list becomes empty. + + All list iterators that refer to the removed item will be set to point + to the new current item. + + \sa remove(), clear(), setAutoDelete(), current() +*/ + +/*! + \fn void QList::removeNode( QLNode *node ) + Removes the \e node from the list. + + This node must exist in the list, otherwise the program may crash. + + The removed item is deleted if \link QCollection::setAutoDelete() + auto-deletion\endlink is enabled. + + The first item in the list will become the new current list item. + The current item is set to null if the list becomes empty. + + All list iterators that refer to the removed item will be set to point to + the item succeeding this item, or the preceding item if the removed item + was the last item. + + \warning Do not call this function unless you are an expert. + + \sa takeNode(), currentNode() remove() removeRef() +*/ + +/*! + \fn bool QList::removeFirst() + Removes the first item from the list. + Returns TRUE if successful, or FALSE if the list is empty. + + The removed item is deleted if \link QCollection::setAutoDelete() + auto-deletion\endlink is enabled. + + The first item in the list becomes the new current list item. + The current item is set to null if the list becomes empty. + + All list iterators that refer to the removed item will be set to point + to the new current item. + + \sa removeLast(), setAutoDelete(), current() remove() +*/ + +/*! + \fn bool QList::removeLast() + Removes the last item from the list. + Returns TRUE if successful, or FALSE if the list is empty. + + The removed item is deleted if \link QCollection::setAutoDelete() + auto-deletion\endlink is enabled. + + The last item in the list becomes the new current list item. + The current item is set to null if the list becomes empty. + + All list iterators that refer to the removed item will be set to point + to the new current item. + + \sa removeFirst(), setAutoDelete(), current() +*/ + +/*! + \fn type *QList::take( uint index ) + Takes the item at position \e index out of the list without + deleting it (even if \link QCollection::setAutoDelete() + auto-deletion\endlink is enabled). + + Returns a pointer to the item taken out of the list, or null if + the index is out of range. + The valid range is <code>0 .. (count() - 1)</code> inclusive. + + The item after the taken item becomes the new current list item if + the taken item is not the last item in the list. If the last item + is taken, the new last item becomes the current item in Qt 2.x. In + 3.0, the current item will be set to null. The current item is set + to null if the list becomes empty. + + All list iterators that refer to the taken item will be set to point to + the new current item. + + \sa remove(), clear(), current() +*/ + +/*! + \fn type *QList::take() + Takes the current item out of the list without deleting it (even if + \link QCollection::setAutoDelete() auto-deletion\endlink is enabled). + Returns a pointer to the item taken out of the list, or null if + the current item is null. + + The item after the taken item becomes the new current list item if + the taken item is not the last item in the list. If the last item + is taken, the new last item becomes the current item in Qt 2.x. In + 3.0, the current item will be set to null. The current item is set + to null if the list becomes empty. + + All list iterators that refer to the taken item will be set to point to + the new current item. + + \sa remove(), clear(), current() +*/ + +/*! + \fn type *QList::takeNode( QLNode *node ) + Takes the \e node out of the list without deleting its item (even if + \link QCollection::setAutoDelete() auto-deletion\endlink is enabled). + Returns a pointer to the item taken out of the list. + + This node must exist in the list, otherwise the program may crash. + + The first item in the list becomes the new current list item. + + All list iterators that refer to the taken item will be set to point to + the item succeeding this item, or the preceding item if the taken item + was the last item. + + \warning Do not call this function unless you are an expert. + + \sa removeNode(), currentNode() +*/ + +/*! + \fn void QList::clear() + Removes all items from the list. + + The removed items are deleted if \link QCollection::setAutoDelete() + auto-deletion\endlink is enabled. + + All list iterators that access this list will be reset. + + \sa remove(), take(), setAutoDelete() +*/ + +/*! + \fn int QList::find( const type *item ) + Finds the first occurrence of \e item in the list. + + If the item is found, the list sets the current item to point to + the found item and returns the index of this item. + If the item is not found, the list sets the current item to null, + the current index to -1 and returns -1. + + The compareItems() function is called when searching for the item + in the list. If compareItems() is not reimplemented, it is more + efficient to call findRef(). + + \sa findNext(), findRef(), compareItems(), current() +*/ + +/*! + \fn int QList::findNext( const type *item ) + Finds the next occurrence of \e item in the list, starting from + the current list item. + + If the item is found, the list sets the current item to point to + the found item and returns the index of this item. + If the item is not found, the list sets the current item to null, + the current index to -1 and returns -1. + + The compareItems() function is called when searching for the item + in the list. If compareItems() is not reimplemented, it is more + efficient to call findNextRef(). + + \sa find(), findNextRef(), compareItems(), current() +*/ + +/*! + \fn int QList::findRef( const type *item ) + Finds the first occurrence of \e item in the list. + + If the item is found, the list sets the current item to point to + the found item and returns the index of this item. + If the item is not found, the list sets the current item to null, + the current index to -1 and returns -1. + + Calling this function is must faster than find(), because find() + compares \e item with each list item using compareItems(). + This function only compares the pointers. + + \sa findNextRef(), find(), current() +*/ + +/*! + \fn int QList::findNextRef( const type *item ) + Finds the next occurrence of \e item in the list, starting from the + current list item. + + If the item is found, the list sets the current item to point to + the found item and returns the index of this item. + If the item is not found, the list sets the current item to null, + the current index to -1 and returns -1. + + Calling this function is must faster than findNext(), because findNext() + compares \e item with each list item using compareItems(). + This function only compares the pointers. + + \sa findRef(), findNext(), current() +*/ + +/*! + \fn uint QList::contains( const type *item ) const + Counts and returns the number of occurrences of \e item in the list. + + The compareItems() function is called when looking for the \e item + in the list. If compareItems() is not reimplemented, it is more + efficient to call containsRef(). + + Does not affect the current list item. + + \sa containsRef(), compareItems() +*/ + +/*! + \fn uint QList::containsRef( const type *item ) const + Counts and returns the number of occurrences of \e item in the list. + + Calling this function is must faster than contains(), because contains() + compares \e item with each list item using compareItems(). + This function only compares the pointers. + + Does not affect the current list item. + + \sa contains() +*/ + +/*! + \fn type *QList::at( uint index ) + Returns a pointer to the item at position \e index in the list, or + null if the index is out of range. + + Sets the current list item to this item if \e index is valid. + The valid range is <code>0 .. (count() - 1)</code> inclusive. + + This function is very efficient. It starts scanning from the first + item, last item or current item, whichever is closest to \e index. + + \sa current() +*/ + +/*! + \fn int QList::at() const + Returns the index of the current list item. The returned value is -1 + if the current item is null. + \sa current() +*/ + +/*! + \fn type *QList::current() const + Returns a pointer to the current list item. The current item may be + null (implies that the current index is -1). + \sa at() +*/ + +/*! + \fn QLNode *QList::currentNode() const + Returns a pointer to the current list node. + + The node can be kept and removed later using removeNode(). + The advantage is that the item can be removed directly without + searching the list. + + \warning Do not call this function unless you are an expert. + + \sa removeNode(), takeNode(), current() +*/ + +/*! + \fn type *QList::getFirst() const + Returns a pointer to the first item in the list, or null if the + list is empty. + + Does not affect the current list item. + + \sa first(), getLast() +*/ + +/*! + \fn type *QList::getLast() const + Returns a pointer to the last item in the list, or null if the + list is empty. + + Does not affect the current list item. + + \sa last(), getFirst() +*/ + +/*! + \fn type *QList::first() + Returns a pointer to the first item in the list and makes this the + current list item, or null if the list is empty. + \sa getFirst(), last(), next(), prev(), current() +*/ + +/*! + \fn type *QList::last() + Returns a pointer to the last item in the list and makes this the + current list item, or null if the list is empty. + \sa getLast(), first(), next(), prev(), current() +*/ + +/*! + \fn type *QList::next() + Returns a pointer to the item succeeding the current item. + Returns null if the current item is null or equal to the last item. + + Makes the succeeding item current. If the current item before this + function call was the last item, the current item will be set to null. + If the current item was null, this function does nothing. + + \sa first(), last(), prev(), current() +*/ + +/*! + \fn type *QList::prev() + Returns a pointer to the item preceding the current item. + Returns null if the current item is null or equal to the first item. + + Makes the preceding item current. If the current item before this + function call was the first item, the current item will be set to null. + If the current item was null, this function does nothing. + + \sa first(), last(), next(), current() +*/ + +/*! + \fn void QList::toVector( QGVector *vec ) const + Stores all list items in the vector \e vec. + + The vector must be have the same item type, otherwise the result + will be undefined. +*/ + + +/***************************************************************************** + QListIterator documentation + *****************************************************************************/ + +/*! + \class QListIterator qlist.h + \brief The QListIterator class provides an iterator for QList collections. + + \ingroup collection + \ingroup tools + + Define a template instance QListIterator\<X\> to create a list iterator + that operates on QList\<X\> (list of X*). + + Example: + \code + #include <qlist.h> + #include <qstring.h> + #include <stdio.h> + + class Employee + { + public: + Employee( const char *name, int salary ) { n=name; s=salary; } + const char *name() const { return n; } + int salary() const { return s; } + private: + QString n; + int s; + }; + + void main() + { + QList<Employee> list; // list of pointers to Employee + list.setAutoDelete( TRUE ); // delete items when they are removed + + list.append( new Employee("Bill", 50000) ); + list.append( new Employee("Steve",80000) ); + list.append( new Employee("Ron", 60000) ); + + QListIterator<Employee> it(list); // iterator for employee list + for ( ; it.current(); ++it ) { + Employee *emp = it.current(); + printf( "%s earns %d\n", emp->name().latin1(), emp->salary() ); + } + } + \endcode + + Program output: + \code + Bill earns 50000 + Steve earns 80000 + Ron earns 60000 + \endcode + + Although QList has member functions to traverse the doubly linked list + structure, using a list iterator is a much more robust way of traversing + the list, because multiple list iterators can operate on the same list, + independent of each other and independent of the QList's current item. + An iterator has its own current list item and can get the next and + previous list items. It can only traverse the list, never modify it. + + A QList knows about all list iterators that are operating on the list. + When an item is removed from the list, the list update all iterators + that are pointing the removed item to point to the new current list item. + + Example: + \code + #include <qlist.h> + #include <qstring.h> + #include <stdio.h> + + class Employee + { + ... // same as above + }; + + void main() + { + QList<Employee> list; // list of pointers to Employee + list.setAutoDelete( TRUE ); // delete items when they are removed + + list.append( new Employee("Bill", 50000) ); + list.append( new Employee("Steve",80000) ); + list.append( new Employee("Ron", 60000) ); + + QListIterator<Employee> it(list); + + list.at( 1 ); // current list item: "Steve" + it.toLast(); // it: "Ron" + --it; // it: "Steve" + + // Now, both the list and the iterator are referring the same item + + list.remove(); + printf( "%s\n", it.current()->name().latin1() ); + } + \endcode + + Program output: + \code + Ron + \endcode + + \sa QList, \link collection.html collection classes\endlink +*/ + +/*! + \fn QListIterator::QListIterator( const QList<type> &list ) + Constructs an iterator for \e list. The current iterator item is + set to point on the first item in the \e list. +*/ + +/*! + \fn QListIterator::~QListIterator() + Destroys the iterator. +*/ + +/*! + \fn uint QListIterator::count() const + Returns the number of items in the list this iterator operates on. + \sa isEmpty() +*/ + +/*! + \fn bool QListIterator::isEmpty() const + Returns TRUE if the list is empty, i.e. count() == 0, otherwise FALSE. + \sa count() +*/ + +/*! + \fn bool QListIterator::atFirst() const + Returns TRUE if the current iterator item is the first list item, otherwise + FALSE. + \sa toFirst(), atLast() +*/ + +/*! + \fn bool QListIterator::atLast() const + Returns TRUE if the current iterator item is the last list item, otherwise + FALSE. + \sa toLast(), atFirst() +*/ + +/*! + \fn type *QListIterator::toFirst() + Sets the current iterator item to point to the first list item and returns + a pointer to the item. Sets the current item to null and returns null + if the list is empty. + \sa toLast(), atFirst() +*/ + +/*! + \fn type *QListIterator::toLast() + Sets the current iterator item to point to the last list item and returns + a pointer to the item. Sets the current item to null and returns null + if the list is empty. + \sa toFirst(), atLast() +*/ + +/*! + \fn QListIterator::operator type *() const + Cast operator. Returns a pointer to the current iterator item. + Same as current(). +*/ + +/*! + \fn type *QListIterator::operator*() + Asterix operator. Returns a pointer to the current iterator item. + Same as current(). +*/ + +/*! + \fn type *QListIterator::current() const + Returns a pointer to the current iterator item. +*/ + +/*! + \fn type *QListIterator::operator()() + Makes the succeeding item current and returns the original current item. + + If the current iterator item was the last item in the list or if it was + null, null is returned. +*/ + +/*! + \fn char *QStrListIterator::operator()() + Makes the succeeding item current and returns the original current item. + + If the current iterator item was the last item in the list or if it was + null, null is returned. +*/ + +/*! + \fn type *QListIterator::operator++() + Prefix ++ makes the succeeding item current and returns the new current + item. + + If the current iterator item was the last item in the list or if it was + null, null is returned. +*/ + +/*! + \fn type *QListIterator::operator+=( uint jump ) + Sets the current item to the item \e jump positions after the current item, + and returns a pointer to that item. + + If that item is beyond the last item or if the dictionary is empty, + it sets the current item to null and returns null +*/ + +/*! + \fn type *QListIterator::operator--() + Prefix -- makes the preceding item current and returns the new current + item. + + If the current iterator item was the first item in the list or if it was + null, null is returned. +*/ + +/*! + \fn type *QListIterator::operator-=( uint jump ) + Returns the item \e jump positions before the current item, or null if + it is beyond the first item. Makes this the current item. +*/ + +/*! + \fn QListIterator<type>& QListIterator::operator=( const QListIterator<type> &it ) + Assignment. Makes a copy of the iterator \a it and returns a reference + to this iterator. +*/ + + +/***************************************************************************** + QStrList documentation + *****************************************************************************/ + +typedef QList<char> QStrList + +/*! + \class QStrList qstrlist.h + \brief The QStrList class provides a doubly linked list of \c char*. + + \inherit QList + + \ingroup collection + \ingroup tools + + This class is a QList\<char\> instance (a list of char*). + + QStrList can make deep or shallow copies of the strings that are inserted. + + A deep copy means to allocate space for the string and then copy the string + data into it. A shallow copy is just a copy of the pointer value and not + the string data. + + The disadvantage with shallow copies is that since a pointer can only + be deleted once, the program must put all strings in a central place and + know when it is safe to delete them (i.e. when the strings are no longer + referenced by other parts of the program). This can make the program + more complex. The advantage of shallow copies is that shallow copies + consume far less memory than deep copies. It is also much faster + to copy a pointer (typically 4 or 8 bytes) than to copy string data. + + A QStrList that operates on deep copies will by default turn on + auto-deletion (see setAutoDelete()). Thus, by default, QStrList will + deallocate any string copies it allocates. + + The virtual compareItems() function is reimplemented and does a case + sensitive string comparison. The inSort() function will insert + strings in a sorted order. + + The QStrListIterator class is an iterator for QStrList. +*/ + +/*! + \fn QStrList::QStrList( bool deepCopies ) + Constructs an empty list of strings. Will make deep copies of all inserted + strings if \e deepCopies is TRUE, or uses shallow copies if \e deepCopies + is FALSE. +*/ + +/*! + \fn QStrList::QStrList( const QStrList &list ) + Constructs a copy of \e list. + + If \e list has deep copies, this list will also get deep copies. + Only the pointers are copied (shallow copy) if the other list does not + use deep copies. +*/ + +/*! + \fn QStrList::~QStrList() + Destroys the list. All strings are removed. +*/ + +/*! + \fn QStrList& QStrList::operator=( const QStrList& list ) + Assigns \e list to this list and returns a reference to this list. + + If \e list has deep copies, this list will also get deep copies. + Only the pointers are copied (shallow copy) if the other list does not + use deep copies. +*/ + + +/***************************************************************************** + QStrIList documentation + *****************************************************************************/ + +/*! + \class QStrIList qstrlist.h + \brief The QStrIList class provides a doubly linked list of \c char* with +case insensitive compare. + + \ingroup collection + \ingroup tools + + This class is a QList\<char\> instance (a list of char*). + + QStrIList is similar to QStrList except that it is case insensitive. + The virtual compareItems() function is reimplemented and does a + case insensitive string comparison. + The inSort() function will insert strings in a sorted order. + + The QStrListIterator class is an iterator for QStrList. +*/ + +/*! + \fn QStrIList::QStrIList( bool deepCopies ) + Constructs a list of strings. Will make deep copies of all inserted + strings if \e deepCopies is TRUE, or uses shallow copies if \e deepCopies + is FALSE. +*/ + +/*! + \fn QStrIList::~QStrIList() + Destroys the list. All strings are removed. +*/ + + +/***************************************************************************** + QStrListIterator documentation + *****************************************************************************/ + +/*! + \class QStrListIterator qstrlist.h + \brief The QStrListIterator class is an iterator for the QStrList and QStrIList classes. + + \inherit QListIterator + + \ingroup tools + + This class is a QListIterator\<char\> instance. + It can traverse the strings in the QStrList and QStrIList classes. +*/ |