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Objective C Terminology Help

So I know a bit of C, trying to jump into ObjC for Max apps. Trying to figure out the terms and just needed a guru to humor me.

So an object could be thought of as a house that holds operations and data together.

But there may be many different objects of the same kind, called an instance. This could be thought of as a trailer park (manufactured开发者_如何学C home community) with a bunch of object homes. Not sure how to give an example of a type however.

Following same example, the methods would be the way the data in the house is manipulated?

Trying to figure these definitions out in a very simple example for my brain :)


It sounds more like you need some education on Object Oriented Programming in general rather than Objective-C specifically. Do some googling for general OOP references. Here's some basics referring to your specific question:

Object: A general term for a combination of data and related operations
Class: A specific definition of an object, i.e. NSController
Instance: A specific object created from a Class definition

So, I could have an object Controller1, that is an instance of the NSController class. This could be referred to as an "NSController object" or an instance of "NSController".


Stop using these analogies, just start playing around with tutorials and the code, you will get the hang of what everything does in no time.

In my words I would call methods a collective of instructions that you can call on with the given method name.

But really, just start writing code, the rest will come :) (no copy pasting!!)


What you're asking has little to do with Objective-C specifically, and everything to do with Object-Oriented Programming. Read up on that before diving into the new language!


I know this topic is quite old, but I thought I'd try and help out in case anyone is coming here looking for answers.

Object

Blueprint for a house. It has the plans for building a house, and it will even supply the contractors to build the house for you, but it is not the house.

Instance

This is a house. It also keeps track of all of the characteristics of the house, and as a result it can be introspective. IE: You can ask the house how many rooms it has, what its dimensions are &etc.

Method

Most every object will define methods. Methods do stuff. Following the house analogy, a method would be the mechanism that would grab the dimensions for you and print them out, or it could be something that would modify the state of the house. IE: call a plumber to fix a leaky pipe on the house.

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