swift-standard.md

Swift Programming Style:

1. Using uppercase for types and protocols, lowercase for everything else _^[1].
2. Using camel case.
3. Indentation : Indent using 2 spaces rather than tabs to conserve space and help prevent line wrapping._^[1]
4. Keep imports minimal. For example, don't import UIKit when importing Foundation will suffice._^[1]

Tricks

1. Auto Indentation in Xcode: Control + I
2. When coding, hold Option button, direct to the Swift API documentation

How to organize your project

1. For example, you have created a single app application in XCode. => Then you should group some auto provided files such as AppDelegate.swift, LaunchScreen.storyboard, info.plist into SupportingFiles (See image):
   
   => Also, you need to change the generic ViewController to a more Specific name.

2. If you adopt MVC structure(highly recommended), make sure your project contains Model, View, Controller folder respectively.(See image):
   
   

More Readings:

1. Swift style guide
2. API design guideline