OpenEuphoria

Re: Explane please....

• Posted by Bernie Ryan <bwryan at PCOM.NET> Mar 10, 1999
• 528 views

In simple words Object Orientated Programming ( sometimes called OOP )

An object is a magic box that contains all the data, procedures, and

functions used to perform a special task. This box can can be connected

to other boxes to form a program. These are magic boxes and we don't know

what is inside them. All we know is what messages to send them and what

messages we will receive from them. We can not change the data directly

inside of them. But they have special messages that we can use to exchange

data with them if the programmer allows us to.

These magic boxes and all there features are described by a blueprint called

a CLASS.

In this blueprint the programmer discribes:

 All of the internal data that the box uses
 All of the messages that you will accept
 All of the messages that you will send
 And any other internal processing

Remember the OBJECT is what does the work the CLASS is just the blueprint

A WINDOW is an OBJECT
We send it messages, it can send messages back, and we can send and get

 data from it. But we CAN'T change how it responses because we don't have

 the source code. And thats the idea of oop to be able to use some object

 that someone else wrote without being able to know how it works inside or

 care, All we have to know is what messages to use. Be careful that you

 don't confuse the word "object" in Euphoria with the OBJECT in OOP.

 I hope this helps

Bernie