syntactic_sugar.md

Pattern: Unused syntactic sugar

Issue: -

Description

Shorthand syntactic sugar should be used, i.e. [Int] instead of Array<Int>.

Examples of correct code:

let x: [Int]


let x: [Int: String]


let x: Int?


func x(a: [Int], b: Int) -> [Int: Any]


let x: Int!


extension Array { 
 func x() { } 
 }


extension Dictionary { 
 func x() { } 
 }


let x: CustomArray<String>


var currentIndex: Array<OnboardingPage>.Index?


func x(a: [Int], b: Int) -> Array<Int>.Index


unsafeBitCast(nonOptionalT, to: Optional<T>.self)


type is Optional<String>.Type


let x: Foo.Optional<String>

Examples of incorrect code:

let x: ↓Array<String>


let x: ↓Dictionary<Int, String>


let x: ↓Optional<Int>


let x: ↓ImplicitlyUnwrappedOptional<Int>


func x(a: ↓Array<Int>, b: Int) -> [Int: Any]


func x(a: [Int], b: Int) -> ↓Dictionary<Int, String>


func x(a: ↓Array<Int>, b: Int) -> ↓Dictionary<Int, String>


let x = ↓Array<String>.array(of: object)


let x: ↓Swift.Optional<String>

Further Reading

• SwiftLint - Syntactic Sugar