Stupid overloading tricks

import Foundation

extension String {
    func split(separator:String) -> [String] {
        return self.componentsSeparatedByString(separator)
    }
    func split(separator:String) -> (String, String)? {
        let pieces:[String] = self.split(separator)
        return (pieces.count == 2) ? (pieces[0], pieces[1]) : nil
    }
    func split(separator:String) -> (String, String, String)? {
        let pieces:[String] = self.split(separator)
        return (pieces.count == 3) ? (pieces[0], pieces[1], pieces[2]) : nil
    }
    func split(separator:String) -> (String, String, String, String)? {
        let pieces:[String] = self.split(separator)
        return (pieces.count == 4) ? (pieces[0], pieces[1], pieces[2], pieces[3]) : nil
    }
    func split(separator:String) -> (String, String, String, String, String)? {
        let pieces:[String] = self.split(separator)
        return (pieces.count == 5) ? (pieces[0], pieces[1], pieces[2], pieces[3], pieces[4]) : nil
    }
    func split(separator:String) -> (String, String, String, String, String, String)? {
        let pieces:[String] = self.split(separator)
        return (pieces.count == 6) ? (pieces[0], pieces[1], pieces[2], pieces[3], pieces[4], pieces[5]) : nil
    }
    func split(separator:String) -> (String, String, String, String, String, String, String)? {
        let pieces:[String] = self.split(separator)
        return (pieces.count == 7) ? (pieces[0], pieces[1], pieces[2], pieces[3], pieces[4], pieces[5], pieces[6]) : nil
    }
    func split(separator:String) -> (String, String, String, String, String, String, String, String)? {
        let pieces:[String] = self.split(separator)
        return (pieces.count == 8) ? (pieces[0], pieces[1], pieces[2], pieces[3], pieces[4], pieces[5], pieces[6], pieces[7]) : nil
    }
    func split(separator:String) -> (String, String, String, String, String, String, String, String, String)? {
        let pieces:[String] = self.split(separator)
        return (pieces.count == 9) ? (pieces[0], pieces[1], pieces[2], pieces[3], pieces[4], pieces[5], pieces[6], pieces[7], pieces[8]) : nil
    }
    func split(separator:String) -> (String, String, String, String, String, String, String, String, String, String)? {
        let pieces:[String] = self.split(separator)
        return (pieces.count == 10) ? (pieces[0], pieces[1], pieces[2], pieces[3], pieces[4], pieces[5], pieces[6], pieces[7], pieces[8], pieces[9]) : nil
    }
}

if let (hello, world) = "Hello, world".split(", ") {
    println(hello)
    println(world)
}

if let (hello, world) = "Hello, world, omg".split(", ") {
    println(hello)
    println(world)
}

if let (first, last, birthday) = "Bob, Quone, January 1st 1987".split(", ") {
    println(first)
    println(last)
    println(birthday)
}