Unused Optional Binding
Prefer != nil
over let _ =
- Identifier: unused_optional_binding
- Enabled by default: Yes
- Supports autocorrection: No
- Kind: style
- Analyzer rule: No
- Minimum Swift compiler version: 5.0.0
- Default configuration: severity: warning, ignore_optional_try: false
Non Triggering Examples
if let bar = Foo.optionalValue {
}
if let (_, second) = getOptionalTuple() {
}
if let (_, asd, _) = getOptionalTuple(), let bar = Foo.optionalValue {
}
if foo() { let _ = bar() }
if foo() { _ = bar() }
if case .some(_) = self {}
if let point = state.find({ _ in true }) {}
Triggering Examples
if let ↓_ = Foo.optionalValue {
}
if let a = Foo.optionalValue, let ↓_ = Foo.optionalValue2 {
}
guard let a = Foo.optionalValue, let ↓_ = Foo.optionalValue2 {
}
if let (first, second) = getOptionalTuple(), let ↓_ = Foo.optionalValue {
}
if let (first, _) = getOptionalTuple(), let ↓_ = Foo.optionalValue {
}
if let (_, second) = getOptionalTuple(), let ↓_ = Foo.optionalValue {
}
if let ↓(_, _, _) = getOptionalTuple(), let bar = Foo.optionalValue {
}
func foo() {
if let ↓_ = bar {
}