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/*!

    \class Q3AsciiDict

    \brief The Q3AsciiDict class is a template class that provides a dictionary based on char* keys.

    \compat

    Q3AsciiDict is implemented as a template class. Define a template

    instance Q3AsciiDict\<X\> to create a dictionary that operates on

    pointers to X (X*).

    A dictionary is a collection of key-value pairs. The key is a

    char* used for insertion, removal and lookup. The value is a

    pointer. Dictionaries provide very fast insertion and lookup.

    Q3AsciiDict cannot handle Unicode keys; use the Q3Dict template

    instead, which uses QString keys. A Q3Dict has the same

    performace as a Q3AsciiDict.

    Example:

    \snippet doc/src/snippets/code/doc_src_q3asciidict.qdoc 0

    In this example we use a dictionary to keep track of the line

    edits we're using. We insert each line edit into the dictionary

    with a unique name and then access the line edits via the

    dictionary. See Q3PtrDict, Q3IntDict and Q3Dict.

    See Q3Dict for full details, including the choice of dictionary

    size, and how deletions are handled. 

    \sa Q3AsciiDictIterator, Q3Dict, Q3IntDict, Q3PtrDict

*/

/*!

    \fn Q3AsciiDict::Q3AsciiDict( int size, bool caseSensitive, bool copyKeys )

    Constructs a dictionary optimized for less than \a size entries.

    We recommend setting \a size to a suitably large prime number (a

    bit larger than the expected number of entries). This makes the

    hash distribution better and will improve lookup performance.

    When \a caseSensitive is TRUE (the default) Q3AsciiDict treats

    "abc" and "Abc" as different keys; when it is FALSE "abc" and

    "Abc" are the same. Case-insensitive comparison only considers the

    26 letters in US-ASCII.

    If \a copyKeys is TRUE (the default), the dictionary copies keys

    using strcpy(); if it is FALSE, the dictionary just copies the

    pointers.

*/

/*!

    \fn Q3AsciiDict::Q3AsciiDict( const Q3AsciiDict<type> &dict )

    Constructs a copy of \a dict.

    Each item in \a dict is inserted into this dictionary. Only the

    pointers are copied (shallow copy).

*/

/*!

    \fn Q3AsciiDict::~Q3AsciiDict()

    Removes all items from the dictionary and destroys it.

    The items are deleted if auto-delete is enabled.

    All iterators that access this dictionary will be reset.

    \sa setAutoDelete()

*/

/*!

    \fn Q3AsciiDict<type> &Q3AsciiDict::operator=(const Q3AsciiDict<type> &dict)

    Assigns \a dict to this dictionary and returns a reference to this

    dictionary.

    This dictionary is first cleared and then each item in \a dict is

    inserted into this dictionary. Only the pointers are copied

    (shallow copy) unless newItem() has been reimplemented().

*/

/*!

    \fn uint Q3AsciiDict::count() const

    Returns the number of items in the dictionary.

    \sa isEmpty()

*/

/*!

    \fn uint Q3AsciiDict::size() const

    Returns the size of the internal hash array (as specified in the

    constructor).

    \sa count()

*/

/*!

    \fn void Q3AsciiDict::resize( uint newsize )

    Changes the size of the hashtable to \a newsize. The contents of

    the dictionary are preserved but all iterators on the dictionary

    become invalid.

*/

/*!

    \fn bool Q3AsciiDict::isEmpty() const

    Returns TRUE if the dictionary is empty, i.e. count() == 0;

    otherwise it returns FALSE.

    \sa count()

*/

/*!

    \fn void Q3AsciiDict::insert( const char *key, const type *item )

    Inserts the \a key with the \a item into the dictionary.

    Multiple items can have the same key, in which case only the last

    item will be accessible using \l operator[]().

    \a item may not be 0.

    \sa replace()

*/

/*!

    \fn void Q3AsciiDict::replace( const char *key, const type *item )

    Replaces an item that has a key equal to \a key with \a item.

    If the item does not already exist, it will be inserted.

    \a item may not be 0.

    Equivalent to:

    \snippet doc/src/snippets/code/doc_src_q3asciidict.qdoc 1

    If there are two or more items with equal keys, then the most

    recently inserted item will be replaced.

    \sa insert()

*/

/*!

    \fn bool Q3AsciiDict::remove( const char *key )

    Removes the item associated with \a key from the dictionary.

    Returns TRUE if successful, i.e. if the key existed in the

    dictionary; otherwise returns FALSE.

    If there are two or more items with equal keys, then the most

    recently inserted item will be removed.

    The removed item is deleted if \link

    Q3PtrCollection::setAutoDelete() auto-deletion\endlink is enabled.

    All dictionary iterators that refer to the removed item will be

    set to point to the next item in the dictionary traversal order.

    \sa take(), clear(), setAutoDelete()

*/

/*!

    \fn type *Q3AsciiDict::take( const char *key )

    Takes the item associated with \a key out of the dictionary

    without deleting it (even if \link Q3PtrCollection::setAutoDelete()

    auto-deletion\endlink is enabled).

    If there are two or more items with equal keys, then the most

    recently inserted item will be taken.

    Returns a pointer to the item taken out, or 0 if the key does not

    exist in the dictionary.

    All dictionary iterators that refer to the taken item will be set

    to point to the next item in the dictionary traversal order.

    \sa remove(), clear(), setAutoDelete()

*/

/*!

    \fn void Q3AsciiDict::clear()

    Removes all items from the dictionary.

    The removed items are deleted if \link

    Q3PtrCollection::setAutoDelete() auto-deletion\endlink is enabled.

    All dictionary iterators that operate on dictionary are reset.

    \sa remove(), take(), setAutoDelete()

*/

/*!

    \fn type *Q3AsciiDict::find( const char *key ) const

    Returns the item associated with \a key, or 0 if the key does not

    exist in the dictionary.

    This function uses an internal hashing algorithm to optimize

    lookup.

    If there are two or more items with equal keys, then the item that

    was most recently inserted will be found.

    Equivalent to the [] operator.

    \sa operator[]()

*/

/*!

    \fn type *Q3AsciiDict::operator[]( const char *key ) const

    Returns the item associated with \a key, or 0 if the key does

    not exist in the dictionary.

    This function uses an internal hashing algorithm to optimize

    lookup.

    If there are two or more items with equal keys, then the item that

    was most recently inserted will be found.

    Equivalent to the find() function.

    \sa find()

*/

/*!

    \fn void Q3AsciiDict::statistics() const

    Debugging-only function that prints out the dictionary

    distribution using qDebug().

*/

/*!

    \fn QDataStream& Q3AsciiDict::read( QDataStream &s,

					Q3PtrCollection::Item &item )

    Reads a dictionary item from the stream \a s and returns a

    reference to the stream.

    The default implementation sets \a item to 0.

    \sa write()

*/

/*!

    \fn QDataStream& Q3AsciiDict::write(QDataStream &s, Q3PtrCollection::Item item) const

    Writes a dictionary \a item to the stream \a s and returns a

    reference to the stream.

    \sa read()

*/

/*!

    \class Q3AsciiDictIterator

    \brief The Q3AsciiDictIterator class provides an iterator for Q3AsciiDict collections.

    \compat

    Q3AsciiDictIterator is implemented as a template class. Define a

    template instance Q3AsciiDictIterator\<X\> to create a dictionary

    iterator that operates on Q3AsciiDict\<X\> (dictionary of X*).

    Example:

    \snippet doc/src/snippets/code/doc_src_q3asciidict.qdoc 2

    In the example we insert some line edits into a dictionary, then

    iterate over the dictionary printing the strings associated with

    those line edits.

    Note that the traversal order is arbitrary; you are not guaranteed

    any particular order.

    Multiple iterators may independently traverse the same dictionary.

    A Q3AsciiDict knows about all the iterators that are operating on

    the dictionary. When an item is removed from the dictionary,

    Q3AsciiDict updates all the iterators that are referring to the

    removed item to point to the next item in the (arbitrary)

    traversal order.

    \sa Q3AsciiDict

*/

/*!

    \fn Q3AsciiDictIterator::Q3AsciiDictIterator( const Q3AsciiDict<type> &dict )

    Constructs an iterator for \a dict. The current iterator item is

    set to point on the first item in the \a dict.

*/

/*!

    \fn Q3AsciiDictIterator::~Q3AsciiDictIterator()

    Destroys the iterator.

*/

/*!

    \fn uint Q3AsciiDictIterator::count() const

    Returns the number of items in the dictionary this iterator

    operates over.

    \sa isEmpty()

*/

/*!

    \fn bool Q3AsciiDictIterator::isEmpty() const

    Returns TRUE if the dictionary is empty, i.e. count() == 0,

    otherwise returns FALSE.

    \sa count()

*/

/*!

    \fn type *Q3AsciiDictIterator::toFirst()

    Sets the current iterator item to point to the first item in the

    dictionary and returns a pointer to the item. If the dictionary is

    empty it sets the current item to 0 and returns 0.

*/

/*!

    \fn Q3AsciiDictIterator::operator type *() const

    Cast operator. Returns a pointer to the current iterator item.

    Same as current().

*/

/*!

    \fn type *Q3AsciiDictIterator::current() const

    Returns a pointer to the current iterator item.

*/

/*!

    \fn const char *Q3AsciiDictIterator::currentKey() const

    Returns a pointer to the key for the current iterator item.

*/

/*!

    \fn type *Q3AsciiDictIterator::operator()()

    Makes the succeeding item current and returns the original current

    item.

    If the current iterator item was the last item in the dictionary

    or if it was 0, 0 is returned.

*/

/*!

    \fn type *Q3AsciiDictIterator::operator++()

    Prefix ++ makes the succeeding item current and returns the new

    current item.

    If the current iterator item was the last item in the dictionary

    or if it was 0, 0 is returned.

*/

/*!

    \fn type *Q3AsciiDictIterator::operator+=( uint jump )

    Sets the current item to the item \a 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 0 and returns 0.

*/