How to append elements into a dictionary in Swift?

Question

I have a simple Dictionary which is defined like:

var dict : NSDictionary = [ 1 : \"abc\", 2 : \"cde\"]

Now I want to add an element into t

Answer 1

For whoever reading this for swift 5.1+

  // 1. Using updateValue to update the given key or add new if doesn't exist


    var dictionary = [Int:String]()    
    dictionary.updateValue("egf", forKey: 3)



 // 2. Using a dictionary[key]

    var dictionary = [Int:String]()    
    dictionary[key] = "value"



 // 3. Using subscript and mutating append for the value

    var dictionary = [Int:[String]]()

    dictionary[key, default: ["val"]].append("value")