Swift Dictionary sort array

DicKeyForin

// https://developer.apple.com/library/prerelease/ios/documentation/swift/conceptual/swift_programming_language/Closures.html

let data:Dictionary = [30:"value1", 20:"2", 10:"3"]
println("patter 1")
for key in sort(Array(data.keys), { (a:Int,b:Int) -> Bool in return a > b })  {
    println( data[key] )
}
println("patter 2")
for key in sort(Array(data.keys), { return $0 > $1 })  {
    println( data[key] )
}
println("patter 3")
for key in sort(Array(data.keys), {$0 > $1 })  {
    println( data[key] )
}
println("patter 4")
for key in sort(Array(data.keys), >)  {
    println( data[key] )
}