比较Swift中的两个版本字符串 [英] Compare two version strings in Swift

问题描述

我有两个不同的应用版本字符串（即3.0.1和3.0.2）。

I have two different app version Strings (i.e. "3.0.1" and "3.0.2").

如何使用 Swift <比较这些/ em>？

How can compare these using Swift?

推荐答案

结束必须将我的字符串转换为NSStrings：

Ended up having to convert my Strings to NSStrings:

if storeVersion.compare(currentVersion, options: NSStringCompareOptions.NumericSearch) == NSComparisonResult.OrderedDescending {
       println("store version is newer")
}

Swift 3

let currentVersion = "3.0.1"
let storeVersion = "3.0.2"

if storeVersion.compare(currentVersion, options: .numeric) == .orderedDescending {
    print("store version is newer")
}

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