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RWTPtrMultiMapIterator<K,T,C>

Data Type and Member Function Indexes
(exclusive of constructors and destructors)

Synopsis

#include<rw/tpmmap.h>
RWTPtrMultiMap<K,T,C> map;
RWTPtrMultiMapIterator<K,T,C> itr(map);

Standard C++ Library Dependent!


RWTPtrMultiMapIterator requires the Standard C++ Library.


Description

RWTPtrMultiMapIterator is supplied with Tools 7 to provide an iterator interface to the new Standard Library based collections with backward compatibility to the Tools 6 container iterators.

The order of iteration over an RWTPtrMultiMap is dependent on the comparator object of the container as applied to the key values of the stored associations.

The current item referenced by this iterator is undefined after construction or after a call to reset(). The iterator becomes valid after being advanced with either a preincrement or operator().

For both operator++ and operator(), iterating past the last element will return a value equivalent to boolean false. Continued increments will return a value equivalent to false until reset() is called.

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

Persistence

None

Examples

#include<rw/tpmmap.h>
#include<iostream.h>
#include<rw/cstring.h>
#include<utility>
int main(){
   RWTPtrMultiMap<RWCString,int,less<RWCString> > age;
   RWTPtrMultiMapIterator<RWCString,int,less<RWCString> > itr(age);
   age.insert(new RWCString("John"), new int(30));
   age.insert(new RWCString("Steve"),new int(17));
   age.insert(new RWCString("Mark"), new int(24));
   age.insert(new RWCString("Steve"),new int(24));
   for(;itr();)
     cout << *itr.key() << "\'s age is " << *itr.value() << endl;
   return 0;
}
Program Output
John's age is 30
Mark's age is 24
Steve's age is 17
Steve's age is 24

Public Constructors

RWTPtrMultiMapIterator<K,T,C>(const RWTPtrMultiMap<K,T,C>& m);

Public Member Operators

K*
operator()();
RWBoolean
operator++();

Public Member Functions

RWTPtrMultiMap<K,T,C>*
container() const; 
K*
key() const; 
void
reset();
void
reset(RWTPtrMultiMap<K,T,C>& h);
T*
value();


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