public static void DemoDistinct()
{
Console.WriteLine("Full demo list of CHess Players:\n");
foreach (var player in ChessPlayer.GetDemoList())
{
Console.WriteLine(player);
}
Console.WriteLine("\nCustom Disctinct\n");
var discinctByRating = ChessPlayer.GetDemoList().Distinct(new DistinctComparer());
foreach (var player in discinctByRating)
{
Console.WriteLine(player);
}
//string str = "Hello, World";
//Console.WriteLine("\"Hello, World\" contains the following chars:");
//foreach (var c in str.ToCharArray().Distinct())
//{
// Console.Write(c);
//}
//Console.WriteLine("\n");
}
private static void DemoNoYield()
{
var players = ChessPlayer.GetDemoList().Filter(c => c.Country == "USA");
foreach (var player in players)
{
Console.WriteLine(player);
}
}
public static void ToDictionary()
{
var players = ChessPlayer.GetDemoList();
var chessPlayers = players.ToDictionary(x => x.Id);
foreach (var player in chessPlayers)
{
Console.WriteLine($"Id: {player.Key}. Last Name: {player.Value.LastName}");
}
}
private static void ElementAtCount()
{
var players = ChessPlayer.GetDemoList();
int count = players.Count(p => p.Country == "USA");
long longCount = players.LongCount();
ChessPlayer x = players.ElementAt(1);
Console.WriteLine($"Count: {count} Long Count: {longCount} Player at Index 1 {x}");
Console.WriteLine();
}
public static void DemoDistinctRating()
{
Console.WriteLine("\nFull Demo list of Chess Players:\n");
foreach (var player in ChessPlayer.GetDemoList())
{
Console.WriteLine(player);
}
Console.WriteLine("\nCustom Distinct\n");
var distintByRating = ChessPlayer.GetDemoList().Distinct(new RatingsComparer());
foreach (var rating in distintByRating)
{
Console.WriteLine(rating);
}
}
public static void ToArrayToList()
{
var chessplayers1 = ChessPlayer.GetDemoList().ToList();
var chessplayers2 = ChessPlayer.GetDemoList().ToArray();
Console.WriteLine("Players in list");
foreach (var player in chessplayers1)
{
Console.WriteLine($"Player Name: {player.LastName}");
}
Console.WriteLine("\nPlayers in array\n");
foreach (var player in chessplayers2)
{
Console.WriteLine($"Player Name: {player.LastName}");
}
Console.WriteLine();
}
private static void Projections_with_Select()
{
var players = ChessPlayer.GetDemoList().ToList();
var ratings = players.Select(p => p.Rating);
var lastNames = players.Select(p => p.LastName);
var FullNames = players.Select(p => $"{p.LastName} {p.FirstName}");
var anonymousType = players.Select((p, index) => new { Index = index, p.FirstName, p.LastName });
foreach (var rating in ratings)
{
Console.WriteLine(rating);
}
Console.WriteLine();
foreach (var type in anonymousType)
{
Console.WriteLine($"{type.FirstName } {type.LastName}");
}
}
public static void AnyAllContains()
{
var players = ChessPlayer.GetDemoList().ToList();
bool contains = players.Contains(new ChessPlayer()
{
Id = 6,
BirthYear = 1993,
FirstName = "Wesley",
LastName = "So",
Rating = 2780,
Country = "USA"
}, new PlayerComparer());
bool any = players.Any(p => p.Country == "FRA");
bool all = players.All(p => p.Rating > 2500);
Console.WriteLine($"Contains = {contains}, Any = {any} and All = {all}");
}
private static IEnumerable <ChessPlayer> FilterPlayersByMinumumRating(int minRating)
{
return(ChessPlayer.GetDemoList().Where(p => p.Rating >= minRating));
}