Re: Now I Know Why I'm Having Trouble With Objects

  • From: "Jacob Kruger" <jacobk@xxxxxxxxxxxxxx>
  • To: <programmingblind@xxxxxxxxxxxxx>
  • Date: Wed, 13 Apr 2011 21:18:05 +0200

Firstly, I'm not Kerneels - do know him FWIW, and secondly, it's like that 
blind soccer advertisement joke thingy where the cat with the bell around it's 
neck walks onto the VI soccer pitch...?

Jacob Kruger
Blind Biker
Skype: BlindZA
'...fate had broken his body, but not his spirit...'

  ----- Original Message ----- 
  From: Homme, James 
  To: programmingblind@xxxxxxxxxxxxx 
  Sent: Wednesday, April 13, 2011 8:38 PM
  Subject: RE: Now I Know Why I'm Having Trouble With Objects


  Hi Korneels,

  Yes, but you'd have some blind dude yelling at you for saying this rather 
than naming what you were talking about.

   

  Jim

   

  Jim Homme,

  Usability Services,

  Phone: 412-544-1810. Skype: jim.homme. NonVisualDevelopment.org: Blind people 
can drive computers. Demonstration GUI Programs: You can program GUI's while 
blind. 

   

  From: programmingblind-bounce@xxxxxxxxxxxxx 
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Jacob Kruger
  Sent: Wednesday, April 13, 2011 1:21 PM
  To: programmingblind@xxxxxxxxxxxxx
  Subject: Re: Now I Know Why I'm Having Trouble With Objects

   

  Instead of self, you could also use something like this - but that might 
relate more to the playing field, the stadium, etc. since they'd all fit in 
with the parent-child structure of the OO representation of a soccer/football 
game...<smile>

   

  Suppose also since the ball would be passed from player to player, you might 
want to go for something like currentPlayer.kick(ball, [destinationObject])

   

  Where the [] parameter would represent an overloaded method, and the fact 
that the target for the kick is an object, it could also be the goalposts, 
another player, the referee, etc. etc.?

   

  LOL!


  Jacob Kruger
  Blind Biker
  Skype: BlindZA
  '...fate had broken his body, but not his spirit...'

    ----- Original Message ----- 

    From: Homme, James 

    To: programmingblind@xxxxxxxxxxxxx 

    Sent: Wednesday, April 13, 2011 1:15 PM

    Subject: RE: Now I Know Why I'm Having Trouble With Objects

     

    Hi Jacob,

    So the self is me then? I like that.

     

    Jim Homme,

    Usability Services,

    Phone: 412-544-1810. Skype: jim.homme. NonVisualDevelopment.org: Blind 
people can drive computers. Demonstration GUI Programs: You can program GUI's 
while blind. 

     

    From: programmingblind-bounce@xxxxxxxxxxxxx 
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Jacob Kruger
    Sent: Tuesday, April 12, 2011 5:47 PM
    To: programmingblind@xxxxxxxxxxxxx
    Subject: Re: Now I Know Why I'm Having Trouble With Objects

     

    Except that the ball is not the object making the action, so it would be 
more like:

    self.kick(ball)

     

    <smile> - think that relates to procedural approach or something - simple 
version is means to an end...

     

    Stay well


    Jacob Kruger
    Blind Biker
    Skype: BlindZA
    '...fate had broken his body, but not his spirit...'

      ----- Original Message ----- 

      From: Homme, James 

      To: programmingblind@xxxxxxxxxxxxx 

      Sent: Tuesday, April 12, 2011 9:19 PM

      Subject: Now I Know Why I'm Having Trouble With Objects

       

      Hi,

      I found this humorous.

       

      Understanding the Parts of VBA "Speech"

       

      If you were going to play soccer using BASIC, the instruction to kick a 
ball would look something like

       

      "Kick the Ball"

       

      Hey-this is how we talk! It makes sense. You have a verb (kick) and then 
a noun (the ball). In the BASIC code in the preceding section, you have a verb

      (print) and a noun (an asterisk). Life is good.

       

      Here is the problem. VBA doesn't work like this. No object-oriented 
language works like this. In an object-oriented language, the objects (the 
nouns) are

      most important (hence, the name: object oriented). If you are going to 
play soccer with VBA, the basic structure would be:

       

      Ball.Kick

       

      You have a noun-the ball. It comes first. In VBA, this is an object

      . Then you have the verb-to kick. It comes next. In VBA, this is a method.

       

      The basic structure of VBA is a bunch of lines of code where you have

       

      Object.Method

       

      Sorry, this is not English. If you took a romance language in high 
school, you will remember that they used a "noun adjective" construct, but I 
don't know

      anyone who speaks in "noun verb" when telling someone to do something. Do 
you talk like this?

       

      Water.Drink

      Food.Eat

      Girl.Kiss

       

      Of course not. That is why VBA is so confusing to someone who previously 
stepped foot in a procedural programming class.

       

      Let's carry the analogy on a bit. Imagine you walk onto a grassy field 
and there are five balls in front of you. There is a soccer ball, a basketball, 
a

      baseball, a bowling ball, and a tennis ball. You want to instruct the kid 
on your soccer team to

       

      Kick the soccer ball

       

      If you tell him kick the ball (or ball.kick

      ), you really aren't sure which one he will kick. Maybe he will kick the 
one closest to him. This could be a real problem if he is standing in front of

      the bowling ball.

       

       

      Jim

       

      Jim Homme,

      Usability Services,

      Phone: 412-544-1810. Skype: jim.homme. NonVisualDevelopment.org: Blind 
people can drive computers. Demonstration GUI Programs: You can program GUI's 
while blind. 

       

       


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