Multi-line function declarations and function calls [Apr 28] – Swiftify Help Center

Swiftify is now able to detect whether the Objective-C code was using a multi-line syntax for method declarations and method calls, and switch to the multi-line syntax accordingly. See this sample and compare the Swift 5.1 and Swift 5.2 outputs to see the difference.

The Official Ray Wenderlich Swift Style Guide says:

Keep short function declarations on one line including the opening brace:

func reticulateSplines(spline: [Double]) -> Bool {
  // reticulate code goes here
}

For functions with long signatures, put each parameter on a new line and add an extra indent on subsequent lines:

func reticulateSplines(
  spline: [Double], 
  adjustmentFactor: Double,
  translateConstant: Int, 
  comment: String
) -> Bool {
  // reticulate code goes here
}

Mirror the style of function declarations at call sites. Calls that fit on a single line should be written like this:

let success = reticulateSplines(splines)

If the call site must be wrapped, put each parameter on a new line, indented one additional level:

let success = reticulateSplines(
  spline: splines,
  adjustmentFactor: 1.3,
  translateConstant: 2,
  comment: "normalize the display")

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