sjordine

@resultBuilder
struct MultipleChildBuilder {
  ...
  static func buildArray(_ components: [[DocumentElement]]) -> [DocumentElement] {
      components.flatMap { $0 }
  }
}

sjordine

let document = Document {
    for index in 1...3 {
        Label(text: "Section \(index)").size(.subtitle)
        Label(text: "A text").size(.body)
    }
}

sjordine

let document = Document {
    switch value {
    case 1:
        Label(text: "Line 1")
    case 2:
        Label(text: "Line 2")
    case 3:
        Label(text: "Line 3")
    default:
        Label(text: "Line")

sjordine

@resultBuilder
struct MultipleChildBuilder {
  ...
  static func buildEither(first component: [DocumentElement]) -> [DocumentElement] {
      return component
  }

  static func buildEither(second component: [DocumentElement]) -> [DocumentElement] {
      return component
  }

sjordine

let document = Document {
    if hasLogo {
        Logo(imageName: "CompanyLogo.png")
    } else {
        Label(text:"Title").size(.title)
    }
    Label(text:"Another line of text")
}

sjordine

let document = Document (
    //The problem lies on this convertion
    [DocumentElement]
    //Those are OK!
    DocumentElement
    DocumentElement
)

sjordine

let circuit = SeriesCircuit (
   [ Resistor(resistance: 7.0),
    ParallelCircuit(...) ]
}

sjordine

let circuit = SeriesCircuit {
    Resistor(resistance: 7.0)
    ParallelCircuit (
        [Resistor(resistance: 10.0),
        SeriesCircuit(...)] )
}

sjordine

let circuit = SeriesCircuit {
    Resistor(resistance: 7.0)
    ParallelCircuit {
        Resistor(resistance: 10.0)
        SeriesCircuit (
            [Resistor(resistance: 6.0),
            Resistor(resistance: 4.0)])
    }
}

sjordine

@resultBuilder
struct MultipleChildBuilder {
...
    static func buildOptional(_ component: DocumentElementConvertible?) -> [DocumentElement] {
        return component?.asElements() ?? []
    }
}