Пол Хадсон (Paul Hudson)PRO SWIFT
BOOK AND VIDEOS
Break out of beginner’s Swift with this hands-on guide
Paul HudsonPro Swift
Paul Hudson
Version: 20190526Contents
Preface 5
Welcome
Chapter 1: Syntax 10
Pattern matching
Nil coalescing
Guard
Lazy loading
Destructuring
Labeled statements
Nested functions, classes and structs
Documentation markup
Chapter 2: Types 69
Useful initializers
Enums
Arrays
Dictionaries
Sets
Tuples
Generics
Chapter 3: References and Values What’s the difference?
Closures are references
Why use structs?
Why use classes?
Choosing between structs and classes
Mixing classes and structs
Immutability
111
Chapter 4: Functions 131
Variadic functions
Operator overloading
Closures
The ~= operator
Chapter 5: Errors 160
Error fundamentals
Error propagation
Throwing functions as parameters try vs try? vs try!
Assertions
Never and fatalError()
Chapter 6: Functional programming 184
What is functional programming?
map() compactMap() flatMap() filter() reduce() sort()
Function composition
Lazy functions
Functors and monads
Chapter 7: Patterns 225
Object-oriented programming
Protocol-oriented programming
MVC
MVVM
Command-line Swift
Preface
Andy Matuschak (@andy_matuschak), lead mobile developer at Khan Academy
If you’re transforming a collection, but you don’t need to access all the elements right away (or at all), you may be able to save cycles and allocations by using the lazy family of collection types:
let userCellsData = users.lazy.map { user in
UserCellData(username: user.username, bioAttributedString:
formatBioString(user.bio))
}
Welcome
This is not a book for people who are new to Swift. I realize that’s obvious given that the book is called Pro Swift, but I want to make sure we’re getting off on the right foot. Instead, this is a book for people who have some real-world knowledge of the language – perhaps you’ve made some apps yourself, perhaps you’ve read through Apple’s official Swift reference guide, or perhaps you even read my first book, Hacking with Swift.
It is not required that you have read Hacking with Swift in order to make the most of this book, but I have to admit it certainly helps. At the very least you should have read the introduction chapter, which goes through the basics of Swift in about an hour of coding. If you haven’t already read that chapter, I suggest you pause here then go and read it at https://