Swift 除法是“/"吗?操作员不工作还是我错过了什么? [英] Is the Swift divide "/" operator not working or have I missed something?

问题描述

我正在尝试在 Swift 游乐场中初始化以下分数数组

I am trying to initialise the following array of fractions in a Swift playground

var probabilitiesX = Array(repeating: Double(1/36), count: 36)

但我的输出数组是:

[0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]

基本上都是零.如果我将分数输入为小数0.02777777"，那么我会得到正确的输出，但是我使用了各种分数，理想情况下不想将它们全部输入.有什么想法吗?

basically all zeros. If I type in the fraction as a decimal "0.02777777" then I get the correct output however I am using various fractions and ideally do not want to have to type them all out. Any ideas?

推荐答案

您的问题在这里:1/36.1 和 36 都是 Int.试试这个:

Your problem is here: 1/36. Both 1 and 36 are Ints. Try this:

var probabilitiesX = Array(repeating: 1.0 / 36.0, count: 36)

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