SwiftUI ERR：“参数'title'必须在参数'style'之前

问题描述

我正在研究一个package，它具有许多具有默认值的自定义参数。鉴于潜在的初始化程序太多，当您更改许多参数时，对正确地排序所有命令很快就会变得困惑。

我有一个两部分的问题：

1. 是否可以从初始化中删除订购要求？
2. 如果不是，是否有更好的方法来构造此程序包的自定义参数？其他开发人员有何建议？

我考虑过使用视图修饰符，但不确定在这种包装结构下该效果如何。

结构初始化和使用如下。

public struct LineChart: View {
    public var data: [Double]
    public var title: String?
    public var subtitle: String?
    public var floatingPointNumberFormat: String
    public var cursorColor: Color
    public var curvedLines: Bool
    public var displayChartStats: Bool
    public var minWidth: CGFloat
    public var minHeight: CGFloat
    public var maxWidth: CGFloat
    public var maxHeight: CGFloat
    
    public var titleFont: Font
    public var subtitleFont: Font
    public var priceFont: Font
    public var fullScreen: Bool
    
    private var chartStyle: ChartStyle = Styles.lineChartStyleOne
    
    public init (data: [Double],title: String? = nil,subtitle: String? = nil,style: LineChartStyle? = .primary,curvedLines: Bool = true,cursorColor: Color = Colors.IndicatorKnob,displayChartStats: Bool = false,minWidth: CGFloat = 0,minHeight: CGFloat = 0,maxWidth: CGFloat = .infinity,maxHeight: CGFloat = .infinity,titleFont: Font = .system(size: 30,weight: .regular,design: .rounded),subtitleFont: Font = .system(size: 14,weight: .light,dataFont: Font = .system(size: 16,weight: .bold,design: .monospaced),floatingPointNumberFormat: String = "%.1f",fullScreen: Bool = false) {
        
        // Assign data
        self.data = data
        self.title = title
        self.subtitle = subtitle
        self.floatingPointNumberFormat = floatingPointNumberFormat
        self.cursorColor = cursorColor
        self.curvedLines = curvedLines
        self.displayChartStats = displayChartStats
        self.minHeight = minHeight
        self.minWidth = minWidth
        self.maxHeight = maxHeight
        self.maxWidth = maxWidth
        self.subtitleFont = subtitleFont
        self.titleFont = titleFont
        self.priceFont = dataFont
        self.fullScreen = fullScreen
        
        switch style {
        case .custom(let customStyle): self.chartStyle = customStyle
        case .primary: self.chartStyle = Styles.lineChartStyleTwo
        case .secondary: self.chartStyle = Styles.lineChartStyleThree
        case .tertiary: self.chartStyle = Styles.lineChartStyleFour
        default: self.chartStyle = Styles.lineChartStyleOne
        }
    }
    
    
    public var body: some View {
        LineChartView(data: self.data,title: self.title,legend: self.subtitle,style: self.chartStyle,valueSpecifier: self.floatingPointNumberFormat,cursorColor: self.cursorColor,curvedLines: self.curvedLines,displayChartStats: self.displayChartStats,minWidth: self.minWidth,minHeight: self.minHeight,maxWidth: self.maxWidth,maxHeight: maxHeight,titleFont: self.titleFont,subtitleFont: self.subtitleFont,priceFont: self.priceFont)
    }
}

解决方法

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