Unowned Variable Capture

Prefer capturing references as weak to avoid potential crashes

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

  Key	Value
  severity	warning

Non Triggering Examples

foo { [weak self] in _ }

foo { [weak self] param in _ }

foo { [weak bar] in _ }

foo { [weak bar] param in _ }

foo { bar in _ }

foo { $0 }

final class First {}
final class Second {
  unowned var value: First
  init(value: First) {
    self.value = value
  }
}

Triggering Examples

foo { [↓unowned self] in _ }

foo { [↓unowned bar] in _ }

foo { [bar, ↓unowned self] in _ }