AlexArchive

public class MinmalisticHashSet<T>
{
    private readonly Dictionary<T, object> _dictionary = new Dictionary<T, object>();

    public bool Add(T item)
    {
        if (_dictionary.ContainsKey(item)) return false;
        _dictionary[item] = null;
        return true;
    }

AlexArchive

private static IEnumerable<string> Something()
{
    yield return "Something() One";
    yield return "Something() Two";
    yield return "Something() Three";
}


// When the compiler encounters an iterator block it emits a nested type for the state machine similar to this: 

AlexArchive

public class DemonstrationList<T> : IEnumerable<T>
{
    private const int defaultCapacity = 10;
    private T[] items = new T[defaultCapacity];
    private int count = 0;

    public void Add(T item)
    {
        if (count == items.Length)
        {

AlexArchive

var sequence = new[] { 5, 4, 3, 2, 1 };

var varSum = sequence.Aggregate((sum, number) => sum + number);
var varCount = sequence.Aggregate(0, (count, number) => count + 1);
var varMin = sequence.Aggregate((min, number) => number < min ? number : min);
var varMax = sequence.Aggregate((max, number) => number > max ? number : max);
var varAverage = varSum / varCount;
var varAverageAlt = sequence.Aggregate(new { sum = 0, count = 0 },
    (anonObj, number) => new { sum = anonObj.sum + number, count = anonObj.count + 1 },
    anonObj => anonObj.sum / anonObj.count);

AlexArchive

public class ProfileModule : ModuleBase
{
    public ProfileModule()
    {
        Get["/profile/{gamertag}"] = context =>
        {
            Profile profile = XboxClient.Profile.GetProfile(context.Gamertag);

            if (profile == null)
                return this.ErrorMessage(HttpStatusCode.BadRequest, "Profile does not exist.");

AlexArchive

git remote -v #output remotes 
git remote rm REMOTENAME #remove remote

git diff #diff for unstaged files
git diff --staged #diff for staged files
git diff --cached #diff for staged files

rm -rf .git #delete Git directory

AlexArchive

Closures
Covariance and Contravaraince
Defered Execution
Method Group
Implicit Conversions
Extension Methods
Properties
Events

Law of Demeter

AlexArchive

USE Musical;

CREATE TABLE dbo.Customer(
	CustomerID INT PRIMARY KEY NOT NULL,
	Title NVARCHAR(8),
	FirstName NVARCHAR(50) NOT NULL,
	LastName NVARCHAR(50) NOT NULL,
);

CREATE TABLE dbo.CustomerAddress(

AlexArchive

{
    "Data": {
        "Friends": [{
            "GamerTag": "AA doomroka",
            "GamerTileUrl": "https://avatar-ssl.xboxlive.com/avatar/AA%20doomroka/avatarpic-s.png",
            "LargeGamerTileUrl": "https://avatar-ssl.xboxlive.com/avatar/AA%20doomroka/avatarpic-l.png",
            "GamerScore": 61090,
            "IsOnline": false,
            "LastSeen": "\/Date(1041379200000)\/",
            "Presence": "Offline",

AlexArchive

namespace Code
{
    public class XboxLogin
    {
        private static void Do()
        {
            var cookieContainer = new CookieContainer();
            var handler = new HttpClientHandler();
            handler.AllowAutoRedirect = true;
            handler.CookieContainer = cookieContainer;