如何使用 Swift 遍历 Array<Dictionary<String,String>> [关闭]

Question

给我一​​个例子和解释“循环通过array<Dictionary<String,String>>using swift...

Answer 1

这是一个显示 2 个循环的示例。第一个循环遍历数组，取出每个字典。第二个循环遍历字典，挑选出每个键值对：

let people:Array<Dictionary<String,String>> = [["first":"Fred", "last":"Jones"], ["first":"Joe", "last":"Smith"]]

// Grab each person dictionary from the array of dictionaries
for person in people {
    // Grab each key, value pair from the person dictionary
    // and print it
    for (key,value) in person {
        println("\(key): \(value)")
    }
}

这个输出：

first: Fred
last: Jones
first: Joe
last: Smith

请注意，字典是无序的，因此也可以打印：

last: Jones
first: Fred
last: Smith
first: Joe