let availableLanguages = Bundle.main.localizations as [String]
список всех доступных языковlet availableLanguages = Bundle.main.preferredLocalizations as [String]
список доступных языков с учетом настроек системы import Cocoa
var numericExpression = "7*(10+2)"
let expression = NSExpression(format: numericExpression)
var result = expression.expressionValueWithObject(nil, context: nil) as! NSNumber
print(result) // 84
import UIKit
var numericExpression = "7*(10+2)"
let expression = NSExpression(format: numericExpression)
var result = expression.expressionValueWithObject(nil, context: nil) as! NSNumber
print(result) // 84