void_return.md

Pattern: Use of -> ()

Issue: -

Description

Prefer -> Void over -> ().

Examples of correct code:

let abc: () -> Void = {}


let abc: () -> (VoidVoid) = {}


func foo(completion: () -> Void)


let foo: (ConfigurationTests) -> () throws -> Void)


let foo: (ConfigurationTests) ->   () throws -> Void)


let foo: (ConfigurationTests) ->() throws -> Void)


let foo: (ConfigurationTests) -> () -> Void)

Examples of incorrect code:

let abc: () -> ↓() = {}


let abc: () -> ↓(Void) = {}


let abc: () -> ↓(   Void ) = {}


func foo(completion: () -> ↓())


func foo(completion: () -> ↓(   ))


func foo(completion: () -> ↓(Void))


let foo: (ConfigurationTests) -> () throws -> ↓())

Further Reading

• SwiftLint - Void Return