find the length of a map in swift

To find the length of a map in Swift, we can use the count property of the map. The count property returns the number of key-value pairs in the map.

Here's an example:

main.swift
// Define a map
let myMap = ["a": 1, "b": 2, "c": 3]

// Get the length of the map
let length = myMap.count

print("Length of the map is \(length)") // Output: Length of the map is 3
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In this example, we define a map called myMap. We then get the length of the map using the count property and store it in the length variable. Finally, we print out the length of the map using print. The output of this code is Length of the map is 3, which tells us that the map has 3 key-value pairs.