質問編集履歴
1
メモ
title
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File without changes
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body
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@@ -6,4 +6,29 @@
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6
6
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let B = 12.8132
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7
7
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let text = String(format: "A: %.2f B: %.2f", A, B)
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8
8
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print(text) // => A: 4.26 B: 12.81
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9
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```
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10
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11
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12
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---
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13
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メモ
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14
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15
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```swift
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16
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extension NSDecimalNumber {
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17
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18
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var percentageStrWithTwoFractionDigits: String {
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19
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let nf = NumberFormatter()
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20
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nf.minimumFractionDigits = 2
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21
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nf.maximumFractionDigits = 2
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22
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nf.numberStyle = .percent
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23
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24
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return nf.string(for: self) ?? ""
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}
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26
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}
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27
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28
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let a: String = "2.2"
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29
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let b: String = "6.6"
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30
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31
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let v = NSDecimalNumber(string: a).dividing(by: NSDecimalNumber(string: b)).percentageStrWithTwoFractionDigits
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32
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33
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print(v) //=> 33.33%
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9
34
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```
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