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iOS

Posted by jon kelson
jon kelson
5,149 Points

Writing a whole program in swift

Hi I'm just trying to get my head around the whole program writing concept. so..... When writing a whole program. do or can you write your functions with your statements etc in them and put them in a separate folder. Then ! Call them from what ? Another function or a main program . ? How does it all work in basic terms if you could please as I'm still a Beginner , Hope that makes sense . Thank you

1 Answer

Quinn Rodgers
Quinn Rodgers
9,561 Points

When you say "writing a whole program" do you mean like an iOS app? I'm going to assume that is what you are referring to in this case. iOS using a design pattern called Model-View-Controller or MVC and Swift is the programming language used to build the app.

Essentially the Model defines the objects and data within the application. For example, a model object might represent a character in a game or a contact in an address book. The View is the user interface of the application. For example, the view would contain the buttons, color, font choice, etc. And the Controller is the intermediary between the Model and View. For example, when a user clicks on a button the app saves the input to a database.

I prefer to keep my models, views, and controllers in separate files. When I need to call a specific function related to my model (for instance User) in my viewcontroller then I need to make sure there I have a user object instantiated within the viewcontroller and call the function on that object.

I've linked Apple's documentation on MVC if you care to read more. https://developer.apple.com/library/mac/documentation/General/Conceptual/DevPedia-CocoaCore/MVC.html

Hope this helps!