using System;

//if you are doing a lot of complex shit in a single function, it's time to refactor and split it up

// small functions are modular and it is easy to find when something breaks

// reusablity, modularity and seperations of concerns!!! IMPORTANT DESIGN PRINCIPALS

​

//how to take related var and functions and put them together? STRUCTS, CLASSES

​

//STRUCTS keep related type var together, like info about a person, stored on stack not heap faster

​

//STRUCTS are value types, they are also complex types

​

struct AddressBookEntry 

{

    public string FirstName;

    public string LastName;

    public int Age;

    public string AddressLine1;

    public string AddressLine2;

    public string PhoneNumber;

    public string City;

    public string State;

    public string ZIP;

    public string GetAddress()

    {

        var result = String.Format("FirstName: {0}\nLastName {1}\nAddress: {2}{7}\nPhoneNumber: {3}\nCity: {4}\nState: {5}\nZIP: {6}",

                             this.FirstName,

                             this.LastName,

                             this.AddressLine1,

                             this.PhoneNumber,

                             this.City, 

                             this.State,

                             this.ZIP,

                             String.IsNullOrWhiteSpace(this.AddressLine2) ?

                             "" : String.Format("\n{0}", this.AddressLine2)

                            );

        return result;

    }

}

​

var Auri = new AddressBookEntry();

Auri.FirstName = "Auri";

Auri.LastName = "Ramizada";

Auri.AddressLine1 = "634 Conner Creek Drive";

Auri.AddressLine2 = "Attn: Awesomeness";

Auri.PhoneNumber = "317.555.4678";

Auri.City = "Fishers";

Auri.State = "IN";

Auri.ZIP = "46038";

​

var Grant = new AddressBookEntry() {

    FirstName = "Grant",

    LastName = "Huey",

    AddressLine1 = "123 Very Cold Drive",

    PhoneNumber = "317.555.5555",

    City = "Antarctica",

    State = "CA",

    ZIP = "66666"

};

​

//Console.WriteLine(Grant.GetAddress());

​

// discoarse from Alex Structs are stored on the Stack!

/*

​

RULE: VALUE Types are stored on the stack, REFERNCE Types are stored on the heap

System stack: fast, holds small ammounts of data, like an int ro Structs data STORED in system CACHE!

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Application Heap: slower, holds larger data types, like classes; holds objects; hold reference types; STORED in system RAM!

    boxing: casting an int to an object (from stack to heap) BAD AND COSTLY, BOTTLE NECK IS THE BUS SPEED BETWEEN RAM AND PROCESSOR

    unboxing: casting an object to an int (from heap to stack) BAD AND COSTLY, BOTTLE NECK IS THE BUS SPEED BETWEEN RAM AND PROCESSOR

​

*/

​