Swift中的for循环

//0到9
for i in (0..<10) {
    print(i)
}

//0到10
for i in (0...10) {
    print(i)
}

for i in (0..<10).reversed() {
    print(i)
}

for item in list {
  	print(item)
}

for (index, element) in list.enumerated() {
    print("Item \(index): \(element)")
}

//swift闭包可以省略参数且用$0匿名，第二个参数则用$1，以此类推
for i in (1...10).filter({ $0 % 2 == 0}) {
    print(i)
    //输出结果为1-10之间的偶数
}

// 定义并实例化字典
var dict = [String: AnyObject]()
dict["name"] = "zhangsan" as AnyObject
dict["age"] = 18 as AnyObject

// 遍历字典(k, v可以随便写)
for (k, v) in dict {
    print("\(k) -- \(v)")
}