NSLocale Swift 3

Locale.current.currencySymbol

The new Locale type moved most of the stringly typed properties into real properties. See the developer pages for the full list of properties.

NSLocale was not renamed, it still exists. Locale is a new type introduced in Swift 3 as a value type wrapper (compare SE-0069 Mutability and Foundation Value Types).

Apparently Locale has no displayName(forKey:value:) method, but you can always convert it to its Foundation counterpart NSLocale:

public var symbol: String {
    return (Locale.current as NSLocale).displayName(forKey: .currencySymbol, value: code) ?? ""
}

More examples:

// Dollar symbol in the german locale:
let s1 = (Locale(identifier:"de") as NSLocale).displayName(forKey: .currencySymbol, value: "USD")!
print(s1) // $

// Dollar symbol in the italian locale:
let s2 = (Locale(identifier:"it") as NSLocale).displayName(forKey: .currencySymbol, value: "USD")!
print(s2) // US$

I use extension for Locale this is my code

extension Int {
func asLocaleCurrency(identifier: String) -> String {
    let formatter = NumberFormatter()
    formatter.numberStyle = .currency
    formatter.locale = Locale(identifier: identifier)
    return formatter.string(from: NSNumber(integerLiteral: self))!
}
}

and this for use

var priceCount = 100000
priceCount.asLocaleCurrency(identifier: "id_ID")