Why I don’t want to develop iOS apps in

Objective C

by @SergDort

Great features of Swift

• Concept of nothing (optionals)• Immutability• Generics• Functions and operators overload• Enums• Elegant closure syntax• Error handling with throws

Concept of nothing (optionals)

• In Objective C we have nil• In Swift we have Optional<T>

Immutability• Readonly properties• Const pointers

Objective C

• Let keyword• Value types• private (set) in properties

Swift

Generics

Functions and and operators overload

Enums

Elegant closure syntax

let closureName: (ParameterTypes) -> (ReturnType) = { prams in

}

returnType (^blockName)(parameterTypes) = ^returnType(parameters) {...};

In Objective C

In Swift

Cool Swift libraries

FRP Libraries• Reactive Cocoa• RxSwift

Example

Resources completive checking

• R.swift

• SwiftGen

Web frameworks for Swift

• Vapor• Kitura• Perfect• Swifton