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Cocoa Programming for OS X: The Big Nerd Ranch Guide
book

Cocoa Programming for OS X: The Big Nerd Ranch Guide

by Aaron Hillegass, Adam Preble, Nate Chandler
April 2015
Intermediate to advanced content levelIntermediate to advanced
556 pages
17h 47m
English
Big Nerd Ranch Guides
Content preview from Cocoa Programming for OS X: The Big Nerd Ranch Guide

3 Structures and Classes

At this point you should be somewhat familiar with using Swift’s standard types: strings, arrays, enums, etc. It is time to move on to bigger and better things: defining your own types. In this chapter, you will build a simple 2D physics simulation. You will create your own structure and a few classes, and you will learn about the differences between them.

Structures

In Cocoa, structures are typically used to represent groupings of data. For example, there is NSPoint, which represents a point in 2D space with an X and a Y value. As your first structure you will create a 2D vector structure.

Create a new playground. From Xcode’s File menu, select New...Playground. Name the playground Physics

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Publisher Resources

ISBN: 9780134077130Purchase book