实战需求

SwiftUI 股票App界面之分时股票走势图

本文价值与收获

看完本文后，您将能够作出下面的界面

看完本文您将掌握的技能

• 生产随机数据集

let randomNumber = Double.random(in: 0...0.02)

private func generateSampleData(_ n: Int) -> [Double] {
        var prices = [Double]()

        for _ in (1..<n) {
            var lastPrice = prices.last ?? 50.0
            let randomNumber = Double.random(in: 0...0.02)
            
            if randomNumber < 0.0145 {
                lastPrice = lastPrice * (1 - randomNumber)
            } else {
                lastPrice = lastPrice * (1 + randomNumber)
            }