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Essential Tools Module Reference Guide

RWTValMultiMap<K,T,C,A>

Module:  Essential Tools Module   Group:  STL-based Collection


Does not inherit

Local Index

Members

Non-Members

Synopsis

#include <rw/tvmmap.h> 
RWTValMultiMap<K,T,C,A> m;

Description

This class maintains a collection of keys, each with an associated item of type T. Order is determined by the key according to a comparison object of type C. C must induce a total ordering on elements of type K via a public member

which returns TRUE if x and its partner should precede y and its partner within the collection. The structure less<T> from the C++-standard header file <functional> is an example.

RWTValMultiMap<K,T,C,A> may contain multiple keys that compare equal to each other. (RWTValMap<K,T,C,A> will not accept a key that compares equal to any key already in the collection.) Equality is based on the comparison object and not on the operator==. Given a comparison object comp, keys a and b are equal if !comp(a,b) && !comp(b,a).

The value type must have operator== and operator< defined. This requirement is imposed by the Standard C++ Library.

Persistence

Isomorphic.

Examples

In this example, a map of RWCStrings and RWDates is exercised.

Program Output:

Related Classes

Class RWTValMap<K,T,C,A> offers the same interface to a collection that will not accept multiple keys that compare equal to each other. RWTValMultiSet<T,C,A> maintains a collection of keys without the associated values.

Class multimap<K,T,C,A,std::pair<Kconst&,T> > is the C++-standard collection that serves as the underlying implementation for this collection.

Public Typedefs

typedef multimap<K,T,C,A> container_type; 
typedef typename container_type::iterator iterator;
typedef typename container_type::const_iterator
  const_iterator;
typedef typename container_type::size_type size_type;
typedef pair <const K,T> value_type; 
typedef pair <const K,T>&  reference; 
typedef const pair <const K,T>& const_reference; 

Public Constructors

RWTValMultiMap<K,T,C,A>(const C& comp = C());
RWTValMultiMap<K,T,C,A>(const container_type& m);
RWTValMultiMap<K,T,C,A>(const RWTValMultiMap<K,T,C,A>& rwm);
RWTValMultiMap<K,T,C,A>
  (const value_type* first, const value_type* last, 
   const C& comp = C());

Public Member Operators

RWTValMultiMap<K,T,C,A>&
operator=(const RWTValMultiMap<K,T,C,A>& m); 
RWTValMultiMap<K,T,C,A>&
operator=(const container_type& m) const;
bool
operator<(const RWTValMultiMap<K,T,C,A>& m); 
bool
operator<(const container_type& m) const;
bool
operator==(const RWTValMultiMap<K,T,C,A>& m) const; 
bool
operator==(const container_type& m) const;

Public Member Functions

void
apply(void (*fn)(const K&, T&, void*),void* d); 
void
apply(void (*fn)(const K&, const T&, void*),void* d) const;
iterator
begin();
const_iterator
begin() const;
void
clear();
bool
contains(const K& key) const; 
bool
contains
(bool (*fn)(const_reference,void*),void* d) const;
iterator
end();
const_iterator
end() const;
size_type
entries() const; 
bool
find(const K& key, Key& r) const; 
bool
find(bool (*fn)(const_reference,void*),void* d, 
     pair<K,T>& r) const;
bool
findValue(const K& key, T& r) const;
bool
findKeyValue(const K& key, K& kr, T& tr) const; 
bool
insert(const K& key, const T& a); 
bool
isEmpty() const; 
const K&
minElement() const;
const K&
maxElement() const;
size_type
occurrencesOf(const K& key) const; 
size_type
occurrencesOf(bool (*fn)(const_reference,void*), 
              void* d) const;
bool
remove(const K& key); 
bool
remove(bool (*fn)(const_reference,void*), void* d);
size_type
removeAll(const K& key); 
size_type
removeAll(bool (*fn)(const_reference,void*), void* d);
multimap<K,T,C,std::allocator<std::pair<const K,T> > >&
std();
const multimap<K,T,C,std::allocator<std::pair<const K,T> > >&
std() const;

Related Global Operators

RWvostream&
operator<<(RWvostream& strm, 
           const RWTValMultiMap<K,T,C,A>& coll);
RWFile&
operator<<(RWFile& strm, 
           const RWTValMultiMap<K,T,C,A>& coll);
RWvistream&
operator>>(RWvistream& strm, RWTValMultiMap<K,T,C,A>& coll); 
RWFile&
operator>>(RWFile& strm, RWTValMultiMap<K,T,C,A>& coll);
RWvistream&
operator>>(RWvistream& strm, RWTValMultiMap<K,T,C,A>*& p);
RWFile&
operator>>(RWFile& strm, RWTValMultiMap<K,T,C,A>*& p);


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