HOF quick ref

HOF.swift

import UIKit

let numbers = [1,2,3,4,5,6,7,8,9]

struct Person {
    let name: String
    let age: Int
    
    init(name: String, age: Int) {
        self.name = name
        self.age = age
    }
}
let personDictionary = [ "A": 48, "B": 26, "C": 27 ]


// Map

    let basicNumber = numbers.map{$0 - 2}
    print(basicNumber)

    let persons = personDictionary.map{name, age in Person(name: name, age: age)}
    print(persons.first!.name)


// Filter

    let evenNumbers = numbers.filter{$0 % 2 == 0}
    print(evenNumbers)

    let perFil = personDictionary.filter{$0 <= $0}
    print(perFil)

// Reduce


    let numberSum = numbers.reduce(0, {a,b in a+b})
    print(numberSum)