Swift：如何组合两个Dictionary实例？ [英] Swift: how to combine two Dictionary instances?

问题描述

如何将 [Dictionary] 附加到另一个 [Dictionary] 使用 Swift ？

How do I append one [Dictionary] to another [Dictionary] using Swift?

我正在使用 AlamoFire 库发送 JSON 到 REST服务器。

字典1

let dict1: [String: AnyObject] = [
            kFacebook: [
                kToken: token
            ]
        ]

字典2

let dict2: [String: AnyObject] = [
        kRequest: [
            kTargetUserId: userId
        ]
    ]

如何组合这两个字典以实现如下？ / strong>

How do I combine the two dictionaries to achieve like below?

let parameters: [String: AnyObject] = [
        kFacebook: [
            kToken: token
        ],
        kRequest: [
            kTargetUserId: userId
        ]
    ]

我尝试过 dict1 + = dict2 但是收到一个编译错误。

I have tried dict1 += dict2 but got a compile error.

提前感谢

推荐答案

var d1 = ["a": "b"]
var d2 = ["c": "e"]

extension Dictionary {
    mutating func merge(dict: [Key: Value]){
        for (k, v) in dict {
            updateValue(v, forKey: k)
        }
    }
}

d1.merge(d2)

请参阅真棒美元& Cent项目
https://github.com/ankurp/ Cent / blob / master / Sources / Dictionary.swift

Refer to the awesome Dollar & Cent project https://github.com/ankurp/Cent/blob/master/Sources/Dictionary.swift

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