Some of your concept about OO is wrong.

When you change some variables in the child OBJECT, will the change be reflected in the parent OBJECT? The question is invalid.
  1. Bad news first. Some concept is really wrong here. There is no parent OBJECT at all. When you instantiate your child class, you got an OBJECT, which is an instance of your child class, which is a sub class of its parent class. There is only one OBJECT.
  2. but the good news is that, this OBJECT does contain the variables you defined in both of the child class and its parent class (The fact is simplified, but for most Perl classes, this is the case). So why do you worry?
  3. For variables (better call those attributes) you defined in the parent class/package should be visible to the child class/package, then make it part of your $self, or can be ref'd from $self.


In reply to Re: Inheritance and objects tied to a database by pg
in thread Inheritance and objects tied to a database by relax99

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.