如何在Swift 3中查找和替换数组字典值

debugcn 发表于 Dev

拉维·巴里扬（Ravi Baliyan）

我的数组中有此字典，我想查找并替换其中字典h出勤率=“”和出勤率=“ A”并替换为出勤率=“ P”

我正在使用这个：

   checkedArray = [[String : AnyObject]]()
   let index = find(checkedArray) { $0["attendance"] == "P" }

    if let index = index {
        checkedArray[index] = newDictionary
    }
    // Do any additional setup after loading the view.

}
func find<C: CollectionType>(collection: C, predicate: (C.Generator.Element) -> Bool) -> C.Index? {

    for index in collection.startIndex ..< collection.endIndex {
        if predicate(collection[index]) {
            return index
        }
    }
    return nil
}

[
    {"studentID":"12","name":"panky","roll":"","attendance":"P"},
    {"studentID":"14","name":"a","roll":"","attendance":""},
    {"studentID":"4","name":"akshay","roll":"1","attendance":"E"},
    {"studentID":"6","name":"anki","roll":"11","attendance":"P"},
    {"studentID":"1","name":"mohit","roll":"2","attendance":"M"},
    {"studentID":"5","name":"yogi","roll":"22","attendance":"L"},
    {"studentID":"3","name":"Neha","roll":"3","attendance":"A"}
]

垫软件

let dic: [[String : Any]] = [
    ["studentID":"12","name":"panky","roll":"","attendance":"P"],
    ["studentID":"14","name":"a","roll":"","attendance":""],
    ["studentID":"4","name":"akshay","roll":"1","attendance":"E"],
    ["studentID":"6","name":"anki","roll":"11","attendance":"P"],
    ["studentID":"1","name":"mohit","roll":"2","attendance":"M"],
    ["studentID":"5","name":"yogi","roll":"22","attendance":"L"],
    ["studentID":"3","name":"Neha","roll":"3","attendance":"A"]
]

let result : [Any] = dic.map { dictionary in
    var dict = dictionary
    if let attendance = dict["attendance"] as? String, attendance == "" || attendance == "A" {
        dict["attendance"] = "P"
    }
    return dict
}

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