Vector in a Vector C++

gothrog · 11-04-2012, 01:23 PM

All,

Is there anything wrong with having a vector within a vector?

I know I need a modified copy and delete constructor. Plus it would need an overrided =operator. Is there anything else I would need?

Code:

typedef class myV2
{
   public: 

      myV2()
      
      int expV1a;
      int expV2a;
      int expV3a;
}

typedef class myV1
{
   public: 

      myV1()
      
      int expV1;
      int expV2;
      int expV3;
      vector<myV2> v2;
}

vector<myV1> v1

johnsfine · 11-04-2012, 01:47 PM

Quote:

Originally Posted by gothrog

Is there anything wrong with having a vector within a vector?

No.

Quote:

I know I need a modified copy and delete constructor. Plus it would need an overrided =operator.

Why do you think you need any of those things?

Your classes might need modified (vs. the default provided by the language) constructors or destructors or operator= etc., but not because of having a vector within a vector and not because of anything you showed in your sample code.

Also:

1) Get rid of the keyword typedef when declaring each of your classes. This is C++, not C.

2) If you are just declaring those constructors (to be defined later) put a ; at the end of each such declaration. If you are defining them, you need {}

3) You need a ; after the } ending each class definition.