Databases
StackOverflow2013
Postsdbo
POIs Inheritance really needed?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POIs Inheritance really needed?
    primarykey
    data
    text
    <p>I must confess I'm somewhat of an OOP skeptic. Bad pedagogical and laboral experiences with object orientation didn't help. So I converted into a fervent believer in Visual Basic (the classic one!).</p> <p>Then one day I found out C++ had changed and now had the STL and templates. I really liked that! Made the language useful. Then another day MS decided to apply facial surgery to VB, and I really hated the end result for the gratuitous changes (using "end while" instead of "wend" will make me into a better developer? Why not drop "next" for "end for", too? Why force the getter alongside the setter? Etc.) plus so much Java features which I found useless (inheritance, for instance, and the concept of a hierarchical framework).</p> <p>And now, several years afterwards, I find myself asking this philosophical question: Is inheritance <strong>really</strong> needed?</p> <p>The gang-of-four say we should favor object composition over inheritance. And after thinking of it, I cannot find something you can do with inheritance you cannot do with object aggregation plus interfaces. So I'm wondering, why do we even have it in the first place?</p> <p>Any ideas? I'd love to see an example of where inheritance would be definitely needed, or where using inheritance instead of composition+interfaces can lead to a simpler and easier to modify design. In former jobs I've found if you need to change the base class, you need to modify also almost all the derived classes for they depended on the behaviour of parent. And if you make the base class' methods virtual... then not much code sharing takes place :(</p> <p>Else, when I finally create my own programming language (a long unfulfilled desire I've found most developers share), I'd see no point in adding inheritance to it...</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USAlan
    1. USJoe Pineda
    plurals
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    3. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POIs Inheritance really needed?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POIs Inheritance really needed?
      1. This table or related slice is empty.
      1. VTDownMod
    3. VO
      singulars
      1. POIs Inheritance really needed?
      1. This table or related slice is empty.
      1. VTUpMod
    1. CODon't create your own programming language. Please.
      singulars
      1. POIs Inheritance really needed?
      1. USJesperE
    2. COLet me augment that comment: Go ahead and create your own language. You'll probably learn a lot doing it. But PLEASE don't release it to the public! ;-)
      singulars
      1. POIs Inheritance really needed?
      1. USdviljoen
    3. COJust to confront the previous negativity. Please go ahead and create your own language. And please release it to the public. At least you seem to be thinking about this stuff. Who cares if your ideas aren't fashionable. The worst thing that can happen is that you're the only user.
      singulars
      1. POIs Inheritance really needed?
      1. USMendelt
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload