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From: jmork@plains.NoDak.edu (James Mork)
Newsgroups: comp.lang.c++
Subject: Angry new C++ programmer: GENERIC CODE?
Message-ID: <6907@plains.NoDak.edu>
Date: 24 Nov 90 00:20:10 GMT
Organization: North Dakota State University, Fargo
Lines: 41


  I am still digging my way into C++ but I am angry to find no
facilities for generic code--as in Ada.  Can you do this?  Why didn't
they put this in? 

  In Ada, for example, one can create a GENERIC package (class) called--say--
BTREE.  All of the btree operations can be defined and the package 
can be instantiated by the compiler.  What is the best way to do something
like this?  I have Turbo C++ which includes a number of examples and 
a class library.  It would be nice to be able do define a derived class 
class in a similar way as Ada does, however, and just be able to say:


class int_btree : public btree(int) { // int specs type of btree 

-------------
   Assuming you could specifiy a generic class something like this...

class btree(tree_type) {
   tree_type value;
   btree(unsigned maxnodes);
  ~btree(); 
   int add(tree_type value);
   int delete(tree_type value);
   int exists(tree_type value);
...
}

------------------------
  Can you do anything with this effect without having to define a base class
called OBJECT and derive a class BTREE from object... and all of that?
Maybe I am just not deep enough into this yet...

Any response is greatly appreciated
Thanks,

  Jim

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