how to get the cardinality of a set in swift

To get the cardinality (size) of a set in Swift, you can use the count property on the set. Here's an example:

main.swift
let mySet: Set<String> = ["apple", "banana", "orange"]
let size = mySet.count
print(size) // Output: 3
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In this example, we first declare a set mySet of type Set<String> containing three strings. Then, we use the count property on mySet to get the cardinality of the set, which is 3. Finally, we print out the cardinality using print(size).