Organise code in Xcode

Great question. I think this is actually one of the most important points for creating readable and maintainable code. You can create your own coding guidelines. I use the following sections for IBOutlets, Model Objects, & Local Variables respectively:

// View Objects (from top to bottom, left to right, and bottom layer to top layer)

// Model Objects

// Locals

Naming your variables intuitively and consistently also helps when you have so many IBOutlets so create a convention for that.

It is also very useful to mark the sections of code as below. The "MARK" creates a section title and the "-" puts a line between the sections. These marks can be seen by clicking on the file name directly above the source editor (e.g. clicking on MasterViewController when viewing MasterViewController.swift).

// MARK: - Initialization Functions

(section includes viewDidLoad(), configureView(), and didReceiveMemoryWarning() at a minimum)

(configureView() should be called in viewDidLoad() and contain all view formatting and setup)

// MARK: - Delegate Functions

// MARK: - Touch Event Functions

It's also useful to organize your files in the project navigator to fit the MVC model. I organize mine as VCM (Main.storyboard at the top, then Controllers (and files they use, e.g. customCell.swift), and finally Data Models) and then a folder for Supporting Files.

I'm pretty sure I'm OCD but I hope this helps!