localizeWithFormat and variadic arguments in Swift

Question

I am trying to create a String extension to do something like that

\"My name is %@. I am %d years old\".localizeWithFormat(\"John\", 30)

w

Answer 1

This allows localized string with variadic arguments:

extension String {
      func localizedStringWithVariables(vars: CVarArgType...) -> String {
        return String(format: NSLocalizedString(self, tableName: nil, bundle: NSBundle.mainBundle(), value: "", comment: ""), arguments: vars)
      }
}

Call using:

"Hello, %@. Your surname is: %@.".localizedStringWithVariables("Neil", "Peart")