jamesrochabrun

//
//  ComputationalGeometry.swift//
//  Created by James Rochabrun on 5/2/17.
//
//

import Foundation

//types of algorhitms
//1) constant -> 1   (1)

jamesrochabrun

var arr = ["a", "abc", "aabc", "aabbc", "aaabbbcc", "bacc", "bbcc", "bbbccc", "cb", "cbb", "cbbc", "d" , "defff", "deffz"]


func binarySearch(_ array: [String], value: String) -> String {
    
    var firstIndex = 0
    var lastIndex = array.count - 1
    var wordToFind = "Not founded"
    var count = 0
    

jamesrochabrun

//1 Download the assets
https://www.yelp.com/developers/display_requirements

//2 enum to enumerate assets
enum ReviewIcon: NSNumber {
    
    case zeroStar
    case oneStar
    case oneAndHalfStar
    case twoStar

jamesrochabrun

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

import UIKit

//GENERICS

//passing the reference in a method using the inout keyword
func swapInts(_ a: inout Int, _ b: inout Int) {
    let tempA = a
    a = b

jamesrochabrun

//Given this classes
class Address {
    var buildingNumber: String?
    var street: String?
}
class Residence {
    var numberOfRooms = 1
    var address: Address?
}
class Resident {

jamesrochabrun

//OPTIONAL BINDING
let weatherDictionary: [String: String] = ["currentWeather" : "22.4", "weeklyWeather" : "25.9"]
if let weekly = weatherDictionary["weeklyWeather"] {
    print(weekly)
}
//prints 25.9

//DOWNSIDES OF USING IF LET AND WHY GUARD SOLVE THIS
struct Friend {

jamesrochabrun

class Person {
    
    let name: String
    var apartment: Apartment?
    
    init(name: String) {
        self.name = name
    }
    deinit {
        print("\(name) is being deinitialized, memory deallocated")

jamesrochabrun

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

import UIKit

//fizbuzz

var oneHundred = [Int]()
for i in 1...100 {
    oneHundred.append(i)
}

jamesrochabrun

//1)  What is ARC and how does it work?

//Every time you create a new instance of a class, ARC allocates a chunk of memory to store information about that instance. 
//This memory holds information about the type of the instance, together with the values of any stored properties associated 
//with that instance.
//Additionally, when an instance is no longer needed, ARC frees up the memory used by that instance so that the memory 
//can be used for other purposes instead. This ensures that class instances do not take up space in memory when they are 
//no longer needed.
//However, if ARC were to deallocate an instance that was still in use, it would no longer be possible to access that 
//instance’s properties, or call that instance’s methods. Indeed, if you tried to access the instance, your app would most likely crash.

jamesrochabrun

class Person: Comparable {
    var birthDate: NSDate?
    let name: String
    
    init(name: String) {
        self.name = name
    }

    static func ==(lhs: Person, rhs: Person) -> Bool {
        return lhs.birthDate === rhs.birthDate || lhs.birthDate?.compare(rhs.birthDate as! Date) == .orderedSame