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[英]How to get value from JSON response from array of dictionary in swift
[英]how to get value from a dictionary in SWIFT
我有數組,其結構是:
var data = [["name" : "Piter", "pubDate" = "01"], ["name" : "Tomas", "pubDate" : "02"], ["name" : "Troy", "pubDate" : "03"]]
var newData = [[String:String]]?
現在我想檢查是否存在“ pubDate” = 01,如果是,我想將此行(該行的所有數據)添加到新表中。 我做這樣的事情:
for _ in data{
if data[indexPath.item]["pubDate"] == "01"{
newData!.append(data[indexPath.item])
}
}
但是我的代碼不起作用。 您有什么想法,如何找到所需的值並將整行添加到新數組中?
您可以使用filter
方法輕松地做到這一點:
let newData = data.filter { $0["pubDate"] == "01" }
無需循環,簡單的單線。
您的代碼中有一個錯字:
["name" : "Piter", "pubDate" = "01"]
它應該是:
["name" : "Piter", "pubDate" : "01"]
我在這里有一個可行的解決方案:
let data = [["name" : "Piter", "pubDate" : "01"], ["name" : "Tomas", "pubDate" : "02"], ["name" : "Troy", "pubDate" : "03"]]
var newData = [[String:String]]()
for dictionary in data {
if dictionary["pubDate"] == "01" {
newData.append(dictionary)
}
}
print(newData);
您可以像這樣枚舉字典數組
let dataArray:Array<Dictionary<String,String>> = [["name" : "Piter", "pubDate" : "01"], ["name" : "Tomas", "pubDate" : "02"], ["name" : "Troy", "pubDate" : "03"]]
var newData = [String:String]()
for dict in dataArray{
for (key,value) in dict{
if value == "01"{
newData[key] = value
print(newData)
}
}
}
希望能解決您的問題
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