passing argument to user defined type

[vivekian]

Hi,

trying to compile the following piece of code

class PeerList
{
public :
....
PeerList ( int noPieces )
{
// using noPieces to dynamically allocate memory for an
array.
}
~PeerList ()
{
....
}
};

Now trying to make a list of objects of type PeerList so trying the
following :

std::list <PeerList> pl ;

But , how do i pass the argument -- 'int noPieces' to this declaration
?

thanks in advance ,

 

[Howard]

Now trying to make a list of objects of type PeerList so trying the
following :

std::list <PeerList> pl ;

But , how do i pass the argument -- 'int noPieces' to this declaration
?

thanks in advance ,

Andy gave you a couple good ways, but I wanted to clarify something for you.
Your code above defines a container (list) for a number of PeerList objects.
It does not yet contain any PeerList objects. This differs from creating a
raw array of PeerList objects, which _does_ create the objects themselves as
well as the container (if you can even call an array a "container").

To put an actual PeerList object in your list, first you create the object,
passing it any constructor parameters you need, and then add it to the list
(e.g., by calling push_back). (Andy also showed a way to do that in one
step which is pretty neat, I think.)

That's why you couldn't figure out how to pass the parameter... because you
don't!

Hope this helps...

-Howard