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From: Ole-Hjalmar Kristensen
 <ole-hjalmar.kristensen@substitute_employer_here.com>
Newsgroups: comp.lang.ada
Subject: Re: Ada Popularity: Comparison of Ada/Charles with C++ STL (and Perl)
Date: 04 Oct 2004 11:02:05 +0200
Organization: Sun Microsystems
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>>>>> "K" == K  <slatyb@yahoo.com> writes:

    K> Bj�rn Persson <spam-away@nowhere.nil> wrote in message news:<pkf7d.4649$d5.36957@newsb.telia.net>...
    >> Kevin Cline wrote:
    >> 
    >> > Looks like I should have written:
    >> > 
    >> > struct X
    >> > {
    >> >   int a;
    >> >   int b;
    >> >   float c;
    >> >   std::string d;
    >> > }
    >> 
    >> :-) I thought you'd counter with that. So now you have a structure with 
    >> two integers, a float and a string, and you need to set a variable such 
    >> that the one or the other integer is selected depending on the variable.

    K> No, I think that you are missing the whole point, which is to
    K> represent a relationship between the members of the structure and
    K> columns in a database.

    K> This is pretty easy with the C++ pointer-to-member construct, but Ada
    K> lacks that construct so you have to instead wrap the data members with
    K> a function so you can store an access-to-function.  But it's worse,
    K> since you will need two functions, one to read the datum and one to
    K> set it.

A plain pointer works just fine for binding data members to columns in
a database, so you don't need the special pointer-to-member construct
in this case.