Function Default Parameter at End

Prefer to locate parameters with defaults toward the end of the parameter list

• Identifier: function_default_parameter_at_end
• Enabled by default: No
• Supports autocorrection: No
• Kind: idiomatic
• Analyzer rule: No
• Minimum Swift compiler version: 5.0.0
• Default configuration:

  Key	Value
  severity	warning
  ignore_first_isolation_inheritance_parameter	true

Non Triggering Examples

func foo(baz: String, bar: Int = 0) {}

func foo(x: String, y: Int = 0, z: CGFloat = 0) {}

func foo(bar: String, baz: Int = 0, z: () -> Void) {}

func foo(bar: String, z: () -> Void, baz: Int = 0) {}

func foo(bar: Int = 0) {}

func foo() {}

class A: B {
  override func foo(bar: Int = 0, baz: String) {}

func foo(bar: Int = 0, completion: @escaping CompletionHandler) {}

func foo(a: Int, b: CGFloat = 0) {
  let block = { (error: Error?) in }
}

func foo(a: String, b: String? = nil,
         c: String? = nil, d: @escaping AlertActionHandler = { _ in }) {}

override init?(for date: Date = Date(), coordinate: CLLocationCoordinate2D) {}

func handleNotification(_ userInfo: NSDictionary,
                        userInteraction: Bool = false,
                        completionHandler: ((UIBackgroundFetchResult) -> Void)?) {}

func write(withoutNotifying tokens: [NotificationToken] =  {}, _ block: (() throws -> Int)) {}

func foo(bar: Int, baz: Int = 0, z: () -> Void) {}

func foo(bar: Int, baz: Int = 0, z: () -> Void, x: Int = 0) {}

func foo(isolation: isolated (any Actor)? = #isolation, bar: String) {}

Triggering Examples

func foo(↓bar: Int = 0, baz: String) {}

private func foo(↓bar: Int = 0, baz: String) {}

public init?(↓for date: Date = Date(), coordinate: CLLocationCoordinate2D) {}

func foo(bar: Int, ↓baz: Int = 0, z: () -> Void, x: Int) {}

//
// ignore_first_isolation_inheritance_parameter: false
//

func foo(isolation: isolated (any Actor)? = #isolation, bar: String) {}