RWTValMultiSetIterator(3C++) RWTValMultiSetIterator(3C++)
Name
RWTValMultiSetIterator<T,C> - Rogue Wave library class
Synopsis
#include<rw/tvmset.h>
RWTValMultiSet< T,C> vs;
RWTValMultiSetIterator< T,C> itr(vs);
Standard C++ Library Dependent!RWTValMultiSetIterator requires the Standard C++ Library.
DescriptionRWTValMultiSetIterator is supplied with Tools.h++ 7 to provide an
iterator interface for class RWTValMultiSetIterator that has backward
compatibility with the container iterators provided in Tools.h++ 6.x. The
order of iteration over an RWTValMultiSet is dependent on the supplied
comparator object parameter C as applied to the values stored in the
container. 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.
Persistence
None
Examples
#include<rw/tvmset.h>
#include<iostream.h>
#include<rw/cstring.h>
int main(){
RWTValMultiSet<RWCString,greater<RWCString> > a;
RWTValMultiSetIterator<RWCString,greater<RWCString> > itr(a);
a.insert("John");
a.insert("Steve");
a.insert("Mark");
a.insert("Steve");
for(;itr();)
cout << itr.key() << endl;
return 0;
}
Program Output
Steve
Steve
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RWTValMultiSetIterator(3C++) RWTValMultiSetIterator(3C++)
Mark
Public Constructors
John
RWTValMultiSetIterator<T,C>(RWTValMultiSet< T,C> &h);
Creates an iterator for the multi-set h. The iterator begins in an
undefined state and must be advanced before the first element will be
accessible
Public Member Operators
RWBoolean
operator()();
Advances self to the next element. If the iterator has advanced past the
last element in the collection, false will be returned. Otherwise, true
will be returned.
RWBoolean
operator++();
Advances self to the next element. If the iterator has been reset or
just created self will now reference the first element. If, before
iteration, self referenced the last association in the multi-set, self
will now reference an undefined value and false will be returned.
Otherwise, true is returned. Note: no postincrement operator is provided.
Public Member Functions
RWTValMultiSet<T,C>*
container() const;
Returns a pointer to the collection being iterated over.
T
key();
Returns the value pointed to by self.
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RWTValMultiSetIterator(3C++) RWTValMultiSetIterator(3C++)
void
reset();
void
reset(RWTValMultiSet<T,C>& h);
Resets the iterator so that after being advanced it will point to the
first element of the collection. Using reset() with no argument will
reset the iterator on the current container. Supplying a RWTValMultiSet
to reset() will reset the iterator on that container.
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