Swift Programming: The Big Nerd Ranch Guide, 3rd Edition

Structures

A struct is a type that groups a set of related chunks of data together in memory. You use structs when you would like to group data together under a common type. You are going to create a struct called Town to model a town with a monster problem, along with its size, population, and region.

In previous chapters, you modeled a town in a playground. Because the example was relatively small, this was not all that limiting. Playgrounds use a streamlined approach to code management to facilitate quick prototyping of code, but app development requires a more robust set of tools for code organization. It is better to encapsulate the definition of the town within its own type, in its own file.

Add a new file to your project using File ...