gistfile1.swift

struct LocalizedString: StringInterpolationConvertible, StringLiteralConvertible {
    typealias StringLiteralType = String
    typealias ExtendedGraphemeClusterLiteralType = String
    
    var s:String
    
    init(_ string: String) {
        s = string
    }
    
    static func convertFromExtendedGraphemeClusterLiteral(value: ExtendedGraphemeClusterLiteralType) -> LocalizedString {
        return LocalizedString(String.convertFromExtendedGraphemeClusterLiteral(value))
    }
    
    static func convertFromStringLiteral(value: String) -> LocalizedString {
        return LocalizedString(String.convertFromStringLiteral(value))
    }
    
    static func convertFromStringInterpolation(strings: LocalizedString...) -> LocalizedString {
        var string: String = String()
        for s in strings {
            string += "\"\(s.s)\""
        }
        
        return LocalizedString(string)
    }
    
    static func convertFromStringInterpolationSegment<T>(expr: T) -> LocalizedString {
        return LocalizedString(String.convertFromStringInterpolationSegment(expr))
    }
}
 
var v:LocalizedString = "12\(1+4)1💩"
 
println(v.s)