我有一个简单的字典，它的定义如下:
var dict : NSDictionary = [ 1 : "abc", 2 : "cde"]
现在我想在这个字典中添加一个元素:3:"efg"
我如何能追加3:“efg”到这个现有的字典?
当前回答
(字符串:任何)
对于使用[String:Any]而不是Dictionary下面是扩展名
extension Dictionary where Key == String, Value == Any {
mutating func append(anotherDict:[String:Any]) {
for (key, value) in anotherDict {
self.updateValue(value, forKey: key)
}
}
}
其他回答
给出以下两本词典:
var dic1 = ["a": 1, "c": 2]
var dic2 = ["e": 3, "f": 4]
下面是如何添加从dic2到dic1的所有项:
dic2.forEach {
dic1[$0.key] = $0.value
}
要将一个新的键-值对追加到字典中，您只需设置键的值。如。
// Initialize the Dictionary
var dict = ["name": "John", "surname": "Doe"]
// Add a new key with a value
dict["email"] = "john.doe@email.com"
print(dict)
输出——>“姓”:“母鹿”、“名称”:“约翰”,“电子邮件”:“john.doe.com”)
var dict = ["name": "Samira", "surname": "Sami"]
// Add a new enter code herekey with a value
dict["email"] = "sample@email.com"
print(dict)
Swift 3 - xcode 8.1
var dictionary = [Int:String]()
dictionary.updateValue(value: "Hola", forKey: 1)
dictionary.updateValue(value: "Hello", forKey: 2)
dictionary.updateValue(value: "Aloha", forKey: 3)
所以，你的字典包含:
字典[1:Hola, 2: Hello, 3: Aloha]
(字符串:任何)
对于使用[String:Any]而不是Dictionary下面是扩展名
extension Dictionary where Key == String, Value == Any {
mutating func append(anotherDict:[String:Any]) {
for (key, value) in anotherDict {
self.updateValue(value, forKey: key)
}
}
}
