Self in Property Initialization

self refers to the unapplied NSObject.self() method, which is likely not expected; make the variable lazy to be able to refer to the current instance or use ClassName.self

  • Identifier: self_in_property_initialization
  • Enabled by default: Yes
  • Supports autocorrection: No
  • Kind: lint
  • Analyzer rule: No
  • Minimum Swift compiler version: 5.0.0
  • Default configuration: warning

Non Triggering Examples

class View: UIView {
    let button: UIButton = {
        return UIButton()
    }()
}
class View: UIView {
    lazy var button: UIButton = {
        let button = UIButton()
        button.addTarget(self, action: #selector(didTapButton), for: .touchUpInside)
        return button
    }()
}
class View: UIView {
    var button: UIButton = {
        let button = UIButton()
        button.addTarget(otherObject, action: #selector(didTapButton), for: .touchUpInside)
        return button
    }()
}
class View: UIView {
    private let collectionView: UICollectionView = {
        let layout = UICollectionViewFlowLayout()
        let collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
        collectionView.registerReusable(Cell.self)

        return collectionView
    }()
}

Triggering Examples

class View: UIView {
    var button: UIButton = {
        let button = UIButton()
        button.addTarget(self, action: #selector(didTapButton), for: .touchUpInside)
        return button
    }()
}
class View: UIView {
    let button: UIButton = {
        let button = UIButton()
        button.addTarget(self, action: #selector(didTapButton), for: .touchUpInside)
        return button
    }()
}