Trying to work out how to remove these nasty loops...

swift-map.swift

//: Playground - noun: a place where people can play

import UIKit

struct Person {
    let name: String
    let isCool: Bool?
}

struct Department {
    let name: String
    let workers: [Person]
}

let tech = Department(name: "Tech", workers: [Person(name: "Jared", isCool: true), Person(name: "Emily", isCool: true), Person(name: "Atticus", isCool: true), Person(name: "Josh", isCool: nil)])

let facilities = Department(name: "Facilities", workers: [Person(name: "Aaron", isCool: true), Person(name: "Joe", isCool: nil), Person(name: "Alex", isCool: nil), Person(name: "Will", isCool: true)])

let company = [tech, facilities]

//I want to remove lines 22 - 29, and collapse them into 1 declaration:
//It would be `let coolPeople = ...`
var coolPeople = [Person]()
for department in company {
    for person in department.workers  {
        if let _ = person.isCool {
            coolPeople.append(person)
        }
    }
}

print(coolPeople)