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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
我有数组,其结构是:
var data = [["name" : "Piter", "pubDate" = "01"], ["name" : "Tomas", "pubDate" : "02"], ["name" : "Troy", "pubDate" : "03"]]
var newData = [[String:String]]?
现在我想检查是否存在“ pubDate” = 01,如果是,我想将此行(该行的所有数据)添加到新表中。 我做这样的事情:
for _ in data{
if data[indexPath.item]["pubDate"] == "01"{
newData!.append(data[indexPath.item])
}
}
但是我的代码不起作用。 您有什么想法,如何找到所需的值并将整行添加到新数组中?
您可以使用filter
方法轻松地做到这一点:
let newData = data.filter { $0["pubDate"] == "01" }
无需循环,简单的单线。
您的代码中有一个错字:
["name" : "Piter", "pubDate" = "01"]
它应该是:
["name" : "Piter", "pubDate" : "01"]
我在这里有一个可行的解决方案:
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);
您可以像这样枚举字典数组
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)
}
}
}
希望能解决您的问题
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