如何循环遍历 Array<Dictionary<String,String>>使用 Swift

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问题描述

给我一个例子和解释循环遍历array>using swift...

Give me one Example and explanation for "loop through array<Dictionary<String,String>>using swift...

推荐答案

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

Here is an example that shows 2 loops. The first loops through the array picking out each dictionary. The second loop loops through the dictionary picking out each key, value pair:

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)")
    }
}

输出:

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

注意字典是无序，所以这也可以打印:

Note that dictionaries are unordered, so this could also print:

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

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