hidori

double Median<TSource>(this IEnumerable<TSource> source, Func<TSource, int> selector)
{
    if (!source.Any()) throw new InvalidOperationException();

    var sorted = source.OrderBy(selector);

    var count = (int)(sorted.Count());

    int index = count / 2;

hidori

void Main()
{
	 var x = 1;

	 Unless(x == 0, () => Console.WriteLine("A"));
	 Unless(x == 0, () => Console.WriteLine("A"), () => Console.WriteLine("B"));

	 Console.WriteLine(Unless(x == 0, () => "A"));
	 Console.WriteLine(Unless(x == 0, () => "A", () => "B"));
}

hidori

using System;
using System.Linq;
using System.Threading;

namespace ConsoleApplication2
{
    /// <summary>
    /// static の悪夢
    /// </summary>
    class Program

hidori

static void Main()
{
	var values = new[] { -12321, -123, -121, -12, -1, 0, 1, 12, 121, 123, 12321 };
	
	var query = values.Select(value => new { Value = value, IsPalindrome = IsPalindrome(value) });
	
	foreach(var item in query)
	{
		Console.WriteLine("{0}: {1}", item.Value, item.IsPalindrome);
	}

hidori

public static class Scala
{
    public static Func<T, V> Compose<T, U, V>(this Func<U, V> first, Func<T, U> second)
    {
        if (first == null) throw new ArgumentNullException("first");
        if (second == null) throw new ArgumentNullException("second");

        return t => first(second(t));
    }

hidori

using System;
using System.Threading;

namespace Mjollnir
{
    public class AsyncResult : IAsyncResult, IDisposable
    {
        public AsyncResult(AsyncCallback callback, object state)
        {
            // callback can be null.

hidori

static class DictionaryExtensions
{
	public static T GetValueOrDefault<T>(this IDictionary<string, object> source, string name)
	{
		if (source == null) throw new ArgumentNullException("source");
		if (name == null) throw new ArgumentNullException("name");
		
		var value = default(object);
		
		return (source.TryGetValue(name, out value) && (value is T))

hidori

static string GetDisplayName<TModel>(Expression<Func<TModel, object>> expression)
{
    var type = typeof(TModel);
    var propertyList = default(IEnumerable<string>);

    switch (expression.Body.NodeType)
    {
        case ExpressionType.Convert:
        case ExpressionType.ConvertChecked:
            var ue = expression.Body as UnaryExpression;

hidori

using System;
using System.Text;

namespace Mjollnir
{
    static class StringFactory
    {
        public static string Create(Action<StringBuilder> action)
        {
            if (action == null) throw new ArgumentNullException("action");

hidori

static class Syncronized
{
    public static void Invoke(Action<ManualResetEvent> action)
    {
        if (action == null) throw new ArgumentException("action");

        using (var signal = new ManualResetEvent(false))
        {
            action(signal);
            signal.WaitOne();