Beefy Boxes and Bandwidth Generously Provided by pair Networks
Do you know where your variables are?
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
About namespaces and inheritance:

Namespaces, like "Animal::Dog", are just names, as was written before. Inheritance is defined differently, but it is good habit to create namespaces related with inheritance, for instance:

package Animal; #parent class, in file lib/Animal.pm sub new { return bless {}, shift; } sub sound { die "cannot call this method on class '".ref(shift)."'"; } sub output_sound { my ($self, $what) = @_; print $what."\n"; } 1; package Animal::Dog; #desc. of Animal, lib/Animal/Dog.pm use base 'Animal'; sub sound { my ($self) = @_; $self->output_sound("haf"); } 1; package Animal::Dog::Sheepdog; #desc. of Dog #lib/Animal/Dog/Sheepdog.pm use base 'Animal::Dog'; sub guard { my ($self, $flock) = @_; #do something } 1; package Animal::Pig; #other descendant use base 'Animal'; sub sound { my ($self) = @_; $self->output_sound("khro"); } 1;
Now you can create some instance of animal :>) by this way:
use Animal::Dog::Sheepdog; my $helper = Animal::Dog::Sheepdog->new(); #Once you have an instance, you can call it's methods by this way: $helper->sound;
Do not hesitate to ask some questions, I had been confused in the same manner. Just note: that code is not tested, it really should have strictings in every module...

In reply to Re: About inheritence ? and Autoload ? by pajout
in thread About inheritence ? and Autoload ? by lepetitalbert

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!
  • 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, 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, 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.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others exploiting the Monastery: (11)
    As of 2015-07-06 13:03 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (74 votes), past polls