Add Item to a Dictionary in Swift

// Create a Dictionary with two elements
var myDictionary = ["first_name": "Sergey", "last_name": "Kargopolov"]

// print to preview

// Add a new key with a value
myDictionary["user_id"] = "f5h7ru0tJurY8f7g5s6fd"

// We should now have 3 key value pairs printed

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Unit Testing Swift Mobile App

Apply Test-Driven Development(TDD) process to iOS mobile app development in Swift Preview this video course.