using System;

var sa = new string[10];

sa[0] = "Danny";

sa[2] = "Beyrer";

Console.WriteLine(sa[2]);

​

for (var i = 0; i < sa.Length - 1; i++) 

{

    Console.WriteLine("{0} : {1}", i, sa[i] == null ? "null" : sa[i]);

}

​

/*DIDN'T WORK **QUESTION

for (var i = 0; i < sa.Length - 1; i++) 

{

    Console.WriteLine("{0} : {1}", String.IsNullOrWhiteSpace(sa[i]) ? "n/a" : sa[i]);

}

*/

​

var numbers = new int[10] {2, 4, 6, 8, 10, 12, 14, 16, 18, 20};

for (var i = 0; i < numbers.Length - 1; i++)

{

    Console.WriteLine("{0} : {1}", i, numbers[i]);

}

​

//var list = new List<String>();

//list.Add("Danny");

//list.Add("Beyrer");

​

//Tuple - a string that can receive a mix of data types

var tuple = new Tuple<int, String>(5, "15");

​

Tuple<int, String> GetPersonInfo()

{

    //do some database lookup to get their info

    return Tuple.Create<int, String>(26, "Danny Beyrer"); //mock data

}

​

var person = GetPersonInfo();

Console.WriteLine(person.Item1);

Console.WriteLine(person.Item2);

Console.WriteLine("{1} is {0} year(s) young.", person.Item1, person.Item2);

//Console.WriteLine(person, GetType()); 

​

//Anonymous Data

var applicationKey =  new {

    SerialNumber = "12345",

        LicenseNOwner = "Eleven Fifty Academy",

        ExpirationDate = new DateTime(2015, 6, 1)

};

​

​

​