Shorthand Operator

Prefer shorthand operators (+=, -=, *=, /=) over doing the operation and assigning

  • Identifier: shorthand_operator
  • Enabled by default: Yes
  • Supports autocorrection: No
  • Kind: style
  • Analyzer rule: No
  • Minimum Swift compiler version: 5.0.0
  • Default configuration:
    KeyValue
    severity error

Non Triggering Examples

foo -= 1

foo += variable

foo *= bar.method()

self.foo = foo / 1

foo = self.foo + 1

page = ceilf(currentOffset * pageWidth)

foo = aMethod(foo / bar)

foo = aMethod(bar + foo)

public func -= (lhs: inout Foo, rhs: Int) {
    lhs = lhs - rhs
}

var helloWorld = "world!"
 helloWorld = "Hello, " + helloWorld

angle = someCheck ? angle : -angle

seconds = seconds * 60 + value

Triggering Examples

↓foo = foo * 1

↓foo = foo / aVariable

↓foo = foo - bar.method()

↓foo.aProperty = foo.aProperty - 1

↓self.aProperty = self.aProperty * 1

↓n = n + i / outputLength

↓n = n - i / outputLength