Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c++ > #121260

Re: What is OOP?

Show all headers | View raw

On Wed, 2024-12-18 at 19:42 +0000, Stefan Ram wrote:
> Rosario19 <Ros@invalid.invalid> wrote or quoted:
> > what is oo programming?
> 
>   Alan Kay coined the term, and, in 2003, I asked him:
> 
> What does "object-oriented [programming]" mean to you?
> 
>   . He answered in an e-mail:
> 
> > OOP to me means only messaging, local retention and protection and 
> > hiding of state-process, and extreme late-binding of all things.
> 
>   . My personal interpretation (taking the above source and my
>   own observations into account):
> 
> An object is an imaginary building block that contains states
> and procedures and can only be accessed from the outside by
> sending messages. The object decides how it reacts (within the
> scope of its specification) to a specific message. (runtime
> model)
> 
> In object-oriented programming, programs describe under which
> conditions which messages are sent to object expressions at
> runtime: For this purpose, there is a dispatch specification
> that defines the recipient object expression and the message
> to be sent. This dispatch definition can also be regarded as
> an expression whose value is then determined by the recipient
> object (as a type of response). (source code model) 
> 
> It must be possible to determine which object receives a
> particular message (late binding) as late as possible (i.e. at
> runtime during the evaluation of the dispatch determination):
> For this purpose, the recipient object can be specified again
> in the dispatch determination itself by means of an expression
> that is only evaluated at runtime as late as possible (runtime
> polymorphism).
> 
>   Yes, I really think it is better to say that we send messages
>   to expressions because which object the expression represents
>   is only determined shortly beforehand and can be different
>   each time the same code is run several times.
> 
>   But there's something else of equal importance! It's the
>   insight by Uncle Bob (Robert C. Martin) about when procedural
>   code is better and when object-oriented code is better.
> 
> > Procedural code (code using data structures) makes it easy to
> > add new functions without changing the existing data
> > structures. OO code, on the other hand, makes it easy to add
> > new classes without changing existing functions.
> Robert C. Martin
> 
> > Procedural code makes it hard to add new data structures
> > because all the functions must change. OO code makes it hard
> > to add new functions because all the classes must change.
> Robert C. Martin

Objects can be saied as variables (int,char,struct...class)
Class can encapsulate almost everything. From my view, it is 
(basically) about the rule of class's members, as in 
ClassGuidelines.txt.

The 'visible' effect is the amout of names are siginificantly 
reduced, this means a lots.

Back to comp.lang.c++ | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

What is OOP? wij <wyniijj5@gmail.com> - 2024-12-02 01:17 +0800
  Re: What is OOP? Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-12-01 10:43 -0800
    Re: What is OOP? Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-12-01 10:49 -0800
  Re: What is OOP? Lynn McGuire <lynnmcguire5@gmail.com> - 2024-12-01 15:07 -0600
    Re: What is OOP? Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-12-01 13:36 -0800
    Re: What is OOP? Bonita Montero <Bonita.Montero@gmail.com> - 2024-12-02 08:45 +0100
  Re: What is OOP? Michael S <already5chosen@yahoo.com> - 2024-12-01 23:43 +0200
    Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-02 09:02 +0800
  Re: What is OOP? Richard Damon <richard@damon-family.org> - 2024-12-01 17:02 -0500
    Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-02 08:57 +0800
      Re: What is OOP? Richard Damon <richard@damon-family.org> - 2024-12-02 08:42 -0500
      Re: What is OOP? Isaac Ganoung <inventor500@vivaldi.net> - 2024-12-08 17:56 +0000
        Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-09 08:28 +0800
          Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-09 09:27 +0800
  Re: What is OOP? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-12-01 20:11 -0800
    Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-02 16:27 +0800
      Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-03 20:43 +0800
  Re: What is OOP? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-12-01 20:34 -0800
    Re: What is OOP? Michael S <already5chosen@yahoo.com> - 2024-12-02 10:47 +0200
      Re: What is OOP? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-12-15 04:24 -0800
        Re: What is OOP? Michael S <already5chosen@yahoo.com> - 2024-12-15 16:33 +0200
          Re: What is OOP? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-12-16 23:59 -0800
    Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-02 16:49 +0800
      Re: What is OOP? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-12-02 14:59 -0800
        Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-03 18:10 +0800
        Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-03 18:38 +0800
          Re: What is OOP? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-12-03 12:16 -0800
            Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-04 08:44 +0800
              Re: What is OOP? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-12-06 18:16 -0800
                Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-08 01:01 +0800
                Re: What is OOP? Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-12-07 10:46 -0800
              Re: What is OOP? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-12-19 21:15 -0800
                Re: What is OOP? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-12-19 21:16 -0800
                Re: What is OOP? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-12-19 21:17 -0800
                Re: What is OOP? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2024-12-23 15:59 -0800
    Re: What is OOP? --- The most important aspect of OOP olcott <polcott333@gmail.com> - 2024-12-06 20:40 -0600
      Re: What is OOP? --- The most important aspect of OOP Richard Damon <richard@damon-family.org> - 2024-12-06 21:45 -0500
        Re: What is OOP? --- The most important aspect of OOP olcott <polcott333@gmail.com> - 2024-12-07 14:07 -0600
        Re: What is OOP? --- The most important aspect of OOP Tim Rentsch <tr.17687@z991.linuxsc.com> - 2024-12-09 09:51 -0800
          Re: What is OOP? --- The most important aspect of OOP Ross Finlayson <ross.a.finlayson@gmail.com> - 2024-12-09 17:43 -0800
        Re: What is OOP? --- The most important aspect of OOP Mr Flibble <leigh@i42.co.uk> - 2025-03-01 21:10 +0000
      Re: What is OOP? --- The most important aspect of OOP wij <wyniijj5@gmail.com> - 2024-12-08 00:32 +0800
  Re: What is OOP? Rosario19 <Ros@invalid.invalid> - 2024-12-04 13:14 +0100
    Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-04 22:31 +0800
    Re: What is OOP? wij <wyniijj5@gmail.com> - 2024-12-19 10:32 +0800
    Re: What is OOP? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-03-17 10:17 -0700
      Re: What is OOP? wij <wyniijj5@gmail.com> - 2025-03-19 04:58 +0800
        Re: What is OOP? wij <wyniijj5@gmail.com> - 2025-03-20 23:04 +0800
      Re: What is OOP? Michael S <already5chosen@yahoo.com> - 2025-03-20 17:37 +0200
        Re: What is OOP? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-03-29 13:33 -0700
      Re: What is OOP? Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-27 18:23 +0000
        Re: What is OOP? wij <wyniijj5@gmail.com> - 2025-03-29 11:12 +0800
          Re: What is OOP? Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-29 05:07 +0000
          Re: What is OOP? Michael S <already5chosen@yahoo.com> - 2025-03-29 20:39 +0300
            Re: What is OOP? Mr Flibble <flibble@reddwarf.jmc.corp> - 2025-03-29 19:03 +0000
        Re: What is OOP? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2025-03-29 13:36 -0700
  Re: What is OOP? wij <wyniijj5@gmail.com> - 2025-09-28 16:02 +0800

csiph-web