swift循环

for index in 0..<2 {
    println("\(index)")
}

for index in 0...2 {
    println("\(index)")
}

var arr = ["hah","xixi"]

for value in arr {
    println("value:\(value)")
}

var i = 0
while i<arr.count {
    println("i:\(i)")
    i++;
}

var dic = ["1":"ahha","2":"lala"]

for (key,value)in dic {
    println("key:\(key),value:\(value)")
}