Mastering Swift

Book Image

Mastering Swift

By : Jon Hoffman

Book Image

Mastering Swift

By: Jon Hoffman

Overview of this book

Mastering Swift

Mastering Swift

Credits

About the Author

About the Author

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Free Chapter

Taking the First Steps with Swift

Taking the First Steps with Swift

Swift language syntax

Learning about Variables, Constants, Strings, and Operators

Learning about Variables, Constants, Strings, and Operators

Constants and variables

Defining constants and variables

The Boolean type

The string type

Optional variables

Using Collections and Cocoa Data Types

Using Collections and Cocoa Data Types

Swift collection types

Using Cocoa data types

Foundation data types

Control Flow and Functions

Control Flow and Functions

What we have learned so far

Classes and Structures

Classes and Structures

What are classes and structures?

Creating a class or structure

Overriding methods and properties

Memory management

Working with XML and JSON Data

Working with XML and JSON Data

XML and the NSXMLParser class

Using the NSXMLParserDelegate protocol

Parsing XML documents

XML and manually building XML documents

JSON and NSJSONSerialization

Custom Subscripting

Custom Subscripting

Introducing subscripts

Subscripts with Swift arrays

Read and write custom subscripts

Read only custom subscripts

Calculated subscripts

Subscript values

Subscripts with ranges

External names for subscripts

Multidimensional subscripts

When not to use a custom subscript

Using Optional Type and Optional Chaining

Using Optional Type and Optional Chaining

Introducing optionals

The need for optional types in Swift

Optional chaining

Working with Generics

Working with Generics

Introduction to generics

Generic functions

Associated types

Working with Closures

Working with Closures

Introducing closures

Simple closures

Shorthand syntax for closures

Using closures with Swift's array algorithms

Standalone closures and good style guidelines

Changing functionality

Select a closure based on results

Strong reference cycles with closures

Using Mix and Match

Using Mix and Match

What is mix and match?

Using Swift and Objective-C together in the same project

Concurrency and Parallelism in Swift

Concurrency and Parallelism in Swift

Concurrency and parallelism

Swift Formatting and Style Guide

Swift Formatting and Style Guide

What is a programming style guide?

Your style guide

Network Development with Swift

Network Development with Swift

What is network development?

An overview of the URL session classes

REST web services

Making an HTTP GET request

Making an HTTP POST request

Checking network connection

Adopting Design Patterns in Swift

Adopting Design Patterns in Swift

What are design patterns?

Creational patterns

Structural design patterns

Behavioral design patterns

Index

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Summary

Adding support for subscripts to our custom types can greatly enhance its readability and usability. As we saw in this chapter, subscripts can be used to add an abstraction layer between our backend storage class and external code. Subscripts can also be used in a similar manner as computed properties where the subscript is used to calculate a value. The key with subscripts is to use them appropriately and in a manner that is consistent with other subscripts in the Swift language.