Objective-C Tutorial - Lesson 17: Creating The Implementation (Methods)

Objective-C® for Dummies® by Neal Goldstein, Copyright © 2009 by Wiley Publishing, Inc., is the main source of information for this video.

I teach you about the Implementation of the class in this lesson and how to create the functionality of the methods (that we declared in the Interface, last time) inside the implementation as well.

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[TheTechGuy]

As a computer whiz and a programmer, I find this to be one of the best tutorials of Objective - C on the internet and on Youtube. Keep it up.

[MyPersonalGeek]

I can't tell you how valuable these videos have been when following along with the book. Please keep it up :)

[canuxfan]

Why do people write first comment? That's really lame. Anyway, another great vid. I feel like the pace you go at makes it much easier to learn than most of the other youtube tutorials I've seen, and the order in which you present the material makes by far the most sense. Others have WAY too much of "Well just type this in for now and I'll explain what it means in 10 lessons". You progress more at a pace where everything learned in a lesson is applied in the code/app for that lesson. Thumbs up.

[kevinjones]

Are you casting aBudget to (double)???

[TheSYRN]

*What is the point of exchangeTransaction?
*Why don't you replace
1. exchangeTransaction = foreignCurrency*exchangeRate;
2. budget -= exchangeTransaction;
*with
1. budget -= foreignCurrency*exchangeRate;
*Thank you for the videos.

[elthechieftain]

whats the difference between declaring a method in @implementation also in @ interface and declaring the method in @implementation but not in @interface?

[SephSoliman]

There's no specific point as far as I can see. It's a leftover from when he was creating the program from scratch and wanted to be explicit about what he was doing.

So yes, you could just replace it like you suggest.

[counartes]

hi... i dont really get the "withExchangeRate: " part :)