Binary Operator Cannot be Applied to two SCNDebugOptions

Question

I am just trying to set two flags for the debug options. Why is this a problem in Swift 4

Answer 1

instead of doing "|", use a set:

sceneView.debugOptions = [ARSCNDebugOptions.showFeaturePoints,ARSCNDebugOptions.showWorldOrigin]

Answer 2

SCNDebugOptions confirm the protocol OptionSet, which confirm SetAlgebra protocol and SetAlgebra confirm ExpressibleByArrayLiteral protocol.

public struct SCNDebugOptions : OptionSet {...}
protocol OptionSet : RawRepresentable, SetAlgebra {...}
public protocol SetAlgebra : Equatable, ExpressibleByArrayLiteral {...}

That's why you can't use the pipe (|) sign for multiple arguments. instead, use an array.

sceneView.debugOptions = [.showFeaturePoints, .showWorldOrigin]