how to add a new element to a set in swift

To add a new element to a set in Swift, you have to use the insert method of the Set data type. The insert method takes as input the element that you want to add to the set.

Here's an example of how you can add an element to a set in Swift:

main.swift
var mySet = Set<String>()

// add an element to the set using insert method
mySet.insert("element1")

// show the set elements
print(mySet)
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8 lines

In this example, we create an empty set of type String. We then use the insert method to add a new element "element1" to the set. Finally, we print the contents of the set to verify the element was added successfully.

Alternatively, you could also use the insert method with shorthand notation:

main.swift
var mySet: Set<String> = ["element1", "element2"]

// add an element to the set using shorthand notation
mySet.insert("element3")

// show the set elements
print(mySet)
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8 lines

In this example, we create a set with two initial elements "element1" and "element2". We then use the insert method with shorthand notation to add a new element "element3" to the set. Finally, we print the contents of the set to verify the element was added successfully.