How to get current language code with Swift?

swift nslocale

In Swift 3

let langStr = Locale.current.languageCode

swift nslocale

It's important to make the difference between the App language and the device locale language (The code below is in Swift 3)

Will return the Device language:

let locale = NSLocale.current.languageCode

Will return the App language:

let pre = Locale.preferredLanguages[0]

swift nslocale

Swift 4 & 5:

Locale.current.languageCode

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